subject:(hydrodynamic)

Anna University

1. Akilamudhan P. Hydrodynamic studies on three-phase internal loop and combined loop airlift fluidized beds.

Degree: Chemical Engineering, 2013, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/9947

►

Many industrial reactions require simultaneous contact of gasliquid or gas-liquid-solid phases. These reactions are carried out in multiphase reactors. These industrial multi-phase reactors are mainly… (more)

Subjects/Keywords: Hydrodynamic

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APA (6^th Edition):

P, A. (2013). Hydrodynamic studies on three-phase internal loop and combined loop airlift fluidized beds. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/9947

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

P, Akilamudhan. “Hydrodynamic studies on three-phase internal loop and combined loop airlift fluidized beds.” 2013. Thesis, Anna University. Accessed April 19, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/9947.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

P, Akilamudhan. “Hydrodynamic studies on three-phase internal loop and combined loop airlift fluidized beds.” 2013. Web. 19 Apr 2021.

Vancouver:

P A. Hydrodynamic studies on three-phase internal loop and combined loop airlift fluidized beds. [Internet] [Thesis]. Anna University; 2013. [cited 2021 Apr 19]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/9947.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

P A. Hydrodynamic studies on three-phase internal loop and combined loop airlift fluidized beds. [Thesis]. Anna University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/9947

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Qian, Bian. Two Problems in Viscous Flow: Fluid-Structure Interaction and Contact Drop Formation.

Degree: PhD, Fluids, Thermal, and Chemical Processing, 2010, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:11130/

► This thesis deals with two problems in viscous flow.In the first part, fluid-structure interactions were investigated, with connections to swimming microorganisms. Motivated by a numerically… (more)

▼ This thesis deals with two problems in viscous flow.In the first part, fluid-structure interactions were investigated, with connections to swimming microorganisms. Motivated by a numerically proposed swimming mechanism, we studied an elastic straight rod rotating on an imaginary cone. The shapes of the rod which rotates at either prescribed torques or speeds were experimentally measured and theoretically calculated. The rod undergoes a discontinuous transition to a helical shape at a critical torque, with increased propulsion force. A simple model was presented to capture and explain the essential physics. In addition, the longstanding hypothesis of hydrodynamic synchronization was investigated using a scale model experiment. We demonstrated that hydrodynamic interactions can cause synchronization between rotating paddles driven at constant torque if the shafts supporting the paddles have some flexibility. The synchronization state depends on the symmetry of the paddles and the torque mismatch. Excellent agreements were shown between the experiments and the regularized stokeslets simulations. And a simple analytic theory was built to predict the synchronization time as a function of paddle separation.In the second part, contact drop formation on a hydrophobic surface was examined experimentally and theoretically. A wide range of droplet sizes can result from the same syringe by varying the dispensing speed. Three dispensing regimes were identified according to the motion of the contact line, a line coexisting between liquid/vapor/solid interfaces. In the fixed and the expanding contact-line regimes, a power dependence of the drop sizes on the dispensing speeds was observed experimentally and obtained theoretically. In the receding contact-line regime, the contact-line motion consists of two stages: a slow retraction at the beginning and a rapid retraction immediately prior to drop breakup. The dispensing process was modeled as a stretching liquid bridge with a free moving contact-line. A quasi-static analysis and numerical calculations were performed to accurately predict the initial evolution of the liquid bridge and the final breakup respectively. The influences of the contact-line movement on the onset instabilities of liquid bridges and thus the deposited drop sizes were discussed. Advisors/Committee Members: Breuer, Kenneth (Director), Powers, Thomas (Reader), Maxey, Martin (Reader), Tripathi, Anubhav (Reader).

Subjects/Keywords: hydrodynamic synchronization

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APA (6^th Edition):

Qian, B. (2010). Two Problems in Viscous Flow: Fluid-Structure Interaction and Contact Drop Formation. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:11130/

Chicago Manual of Style (16^th Edition):

Qian, Bian. “Two Problems in Viscous Flow: Fluid-Structure Interaction and Contact Drop Formation.” 2010. Doctoral Dissertation, Brown University. Accessed April 19, 2021. https://repository.library.brown.edu/studio/item/bdr:11130/.

MLA Handbook (7^th Edition):

Qian, Bian. “Two Problems in Viscous Flow: Fluid-Structure Interaction and Contact Drop Formation.” 2010. Web. 19 Apr 2021.

Vancouver:

Qian B. Two Problems in Viscous Flow: Fluid-Structure Interaction and Contact Drop Formation. [Internet] [Doctoral dissertation]. Brown University; 2010. [cited 2021 Apr 19]. Available from: https://repository.library.brown.edu/studio/item/bdr:11130/.

Council of Science Editors:

Qian B. Two Problems in Viscous Flow: Fluid-Structure Interaction and Contact Drop Formation. [Doctoral Dissertation]. Brown University; 2010. Available from: https://repository.library.brown.edu/studio/item/bdr:11130/

University of Hawaii – Manoa

3. Nolte, Jerica Dawn. In-ocean experiments of a wave energy conversion device with a drogue and wave power calculations.

Degree: 2016, University of Hawaii – Manoa

URL: http://hdl.handle.net/10125/100629

►

M.S. University of Hawaii at Manoa 2013.

This research describes the experimental and numerical modeling of a heaving point source wave energy conversion (WEC) device… (more)

Subjects/Keywords: hydrodynamic analysis

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APA (6^th Edition):

Nolte, J. D. (2016). In-ocean experiments of a wave energy conversion device with a drogue and wave power calculations. (Thesis). University of Hawaii – Manoa. Retrieved from http://hdl.handle.net/10125/100629

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nolte, Jerica Dawn. “In-ocean experiments of a wave energy conversion device with a drogue and wave power calculations.” 2016. Thesis, University of Hawaii – Manoa. Accessed April 19, 2021. http://hdl.handle.net/10125/100629.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nolte, Jerica Dawn. “In-ocean experiments of a wave energy conversion device with a drogue and wave power calculations.” 2016. Web. 19 Apr 2021.

Vancouver:

Nolte JD. In-ocean experiments of a wave energy conversion device with a drogue and wave power calculations. [Internet] [Thesis]. University of Hawaii – Manoa; 2016. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/10125/100629.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nolte JD. In-ocean experiments of a wave energy conversion device with a drogue and wave power calculations. [Thesis]. University of Hawaii – Manoa; 2016. Available from: http://hdl.handle.net/10125/100629

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University

4. Prabu T. Hydrodynamic design of a Centrifugal pump impeller;.

Degree: Hydrodynamic design of a Centrifugal pump impeller, 2015, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/43133

►

The world of fluid machinery is vast and widespread having its newlinewings in all aspects of life From agriculture to air conditioning fluid newlinemachinery play… (more)

Subjects/Keywords: Centrifugal pump impeller; Hydrodynamic

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APA (6^th Edition):

T, P. (2015). Hydrodynamic design of a Centrifugal pump impeller;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/43133

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

T, Prabu. “Hydrodynamic design of a Centrifugal pump impeller;.” 2015. Thesis, Anna University. Accessed April 19, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/43133.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

T, Prabu. “Hydrodynamic design of a Centrifugal pump impeller;.” 2015. Web. 19 Apr 2021.

Vancouver:

T P. Hydrodynamic design of a Centrifugal pump impeller;. [Internet] [Thesis]. Anna University; 2015. [cited 2021 Apr 19]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/43133.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

T P. Hydrodynamic design of a Centrifugal pump impeller;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/43133

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of the Western Cape

5. Rafieferantsoa, Mika Harisetry. Neutral hydrogen in galaxies, its content and the effect of environment on its evolution .

Degree: 2018, University of the Western Cape

URL: http://hdl.handle.net/11394/6581

► Using two hydrodynamic galaxy formation simulations from the Mufasa project that I helped develop, we aim to better understand the relationship between galaxy evolution and… (more)

▼ Using two hydrodynamic galaxy formation simulations from the Mufasa project that I helped develop, we aim to better understand the relationship between galaxy evolution and its cold gas content commonly known as the neutral hydrogen or Hi. We first look at the environmental properties of the simulated galaxies and compare to those that are available observationally. As a proxy, we specifically quantify the so-called galactic conf ormity, which is the concordance between the properties of galaxies neighbouring the primaries, in chapter 2. We show that the Hi, the specific star formation rate (sSFR) and the colour of galaxies show galactic conformity in qualitative agreement with previous observed data, i.e. the Hi-rich primary galaxies are surrounded by Hi-richer galaxies than the Hi-poor primary galaxies, and similarly for the sSFR and the colour. We find that environment, quantified by the number of neigbouring galaxies within a fixed aperture, stellar age and molecular hydrogen (H2) also show conformity. Galactic conformity also depends on the dark matter halo mass of the primary galaxy. The galactic conformity signal from the primaries of smaller haloes is weak but extends out to several virial radii of those structures, whereas the signal is very strong for high mass haloes but lowers quickly with distances from the primaries. We also find the galactic conformity only emerges in the later half of cosmic evolution. We next quantify the gas content and star formation depletion timescales in chapter 3. We use two carefully chosen groups of simulated galaxies and find that timescales are affected by both the mass of the virialised structure of the first infall and the galaxy stellar mass at infall: the higher the halo mass or the stellar mass the shorter the timescale. The gas or Hi depletion timescale is concordant to that of the star formation quenching, indicative of direct decrease of SFR due to depletion of the extended cold gas reservoir. The neutral atomic or molecular hydrogen consumption timescale depends on the Hubble time. Galaxies tend to form stars more efficiently at lower redshift. While the halo mass of infall affects the consumption timescale of the Hi, it does not correlate with the H2. We lastly develop machine learning tools to use galaxy photometric data to predict a galaxy’s Hi mass in chapter 4, to allow predictions for Hi from much larger optical photometric surveys. The training and testing of the algorithms are done first with the simulated data from Mufasa. We show that our model performs better than previously done with ad hoc data fitting approaches. Random Forest (RF) followed by the Deep Neural Networks (DNN) perform best among the explored machine learning techniques. Extending the trained models to observed data, namely the Arecibo Legacy Fast ALFA (ALFALFA) and REsolved Spectroscopy Of a Local VolumE (RESOLVE) survey data, we show the overall performance is slightly reduced relative to the simulated testing set owing to the small inconsistency between… Advisors/Committee Members: Dave, Romeel (advisor).

Subjects/Keywords: Hydrodynamic; Galaxy; Evolution; Qualitative; Hydrogen

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APA (6^th Edition):

Rafieferantsoa, M. H. (2018). Neutral hydrogen in galaxies, its content and the effect of environment on its evolution . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/6581

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rafieferantsoa, Mika Harisetry. “Neutral hydrogen in galaxies, its content and the effect of environment on its evolution .” 2018. Thesis, University of the Western Cape. Accessed April 19, 2021. http://hdl.handle.net/11394/6581.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rafieferantsoa, Mika Harisetry. “Neutral hydrogen in galaxies, its content and the effect of environment on its evolution .” 2018. Web. 19 Apr 2021.

Vancouver:

Rafieferantsoa MH. Neutral hydrogen in galaxies, its content and the effect of environment on its evolution . [Internet] [Thesis]. University of the Western Cape; 2018. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/11394/6581.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rafieferantsoa MH. Neutral hydrogen in galaxies, its content and the effect of environment on its evolution . [Thesis]. University of the Western Cape; 2018. Available from: http://hdl.handle.net/11394/6581

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waikato

6. Robinson, Benjamin Joseph. Hydrodynamic impacts of tectonics in prehistoric Ohiwa Harbour, North Island, New Zealand .

Degree: 2012, University of Waikato

URL: http://hdl.handle.net/10289/6478

► Ohiwa Harbour is an estuarine lagoon located in the eastern Bay of Plenty, North Island, New Zealand. Ohiwa Harbour is bounded by two sand spits,… (more)

▼ Ohiwa Harbour is an estuarine lagoon located in the eastern Bay of Plenty, North Island, New Zealand. Ohiwa Harbour is bounded by two sand spits, Ohope and Ohiwa Spits. This study assessed the likelihood of a resistant barrier underlying Ohiwa Spit, which would control the inlet and spit locations. The observed depths of layers unable to be penetrated by a vibrocorer on Ohiwa Spit supported this idea, along with the discovery of a rock outcrop on the eastern harbour entrance using sidescan SONAR. Vibrocoring on Ohiwa Spit added to the knowledge of the prehistoric evolution of Ohiwa Harbour, and an attempt to infer various subsidence events on Ohiwa Spit were made. Fining upwards coarse sand sequences with dominant shell material were found in the cores. These sequences could be related to a change in harbour hydrodynamics, or recent subsidence events in Ohiwa Harbour, such as the 0.6m subsidence of the Waimana Fault 636 to 575cal yrs BP. A sharp change in the core profile was observed at 1.4m in core C and 1.7m in core C2, marked by increased grain size and an abundance of shell material, mostly Austrovenus stutchburyi. This could be related to a change in wave energy in the harbour or an erosional contact associated with subsidence of Ohiwa Spit. Comparison of radiocarbon dated shells in this study with Murdoch (2005) on Ohope Spit suggests that more subsidence has occurred at Ohiwa Spit than Ohope Spit; this may be associated with a fault through the harbour entrance. Subsidence associated with earthquakes, and erosion associated with at least four tsunami events in the last 6000 years has increased the depth and extent of Ohiwa Harbour, increasing its volume. This study used numerical modeling to determine the hydrodynamic impacts of past catastrophic events (earthquake related subsidence and volcanic eruptions) on Ohiwa Harbour. Ten scenarios along with present conditions were modelled. • In scenarios where sea level was modified only (scenarios 1-5 and 8), tidal range and surface elevation increased within the harbour, but not at the harbour entrance. The entrance hydrodynamics were also influenced by its width; as Ohope Spit accreted, the surface elevation and flow velocities increased within the tidal inlet • Flow speeds increased at the harbour entrance by up to 50% following subsidence in scenarios 9 and 10 • A drop in sea level during subsidence (scenario 6) resulted in a smaller tidal prism and hence reduced flow velocities at the inlet, despite the subsidence • Scenario 7 involved subsidence and the breaching of Ohope Spit, which would divert flow away from the entrance and result in reduced flow velocities at the entrance Advisors/Committee Members: de Lange, Willem P (advisor).

Subjects/Keywords: Hydrodynamic; Ohiwa Harbour; Subsidence; Modelling

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APA (6^th Edition):

Robinson, B. J. (2012). Hydrodynamic impacts of tectonics in prehistoric Ohiwa Harbour, North Island, New Zealand . (Masters Thesis). University of Waikato. Retrieved from http://hdl.handle.net/10289/6478

Chicago Manual of Style (16^th Edition):

Robinson, Benjamin Joseph. “Hydrodynamic impacts of tectonics in prehistoric Ohiwa Harbour, North Island, New Zealand .” 2012. Masters Thesis, University of Waikato. Accessed April 19, 2021. http://hdl.handle.net/10289/6478.

MLA Handbook (7^th Edition):

Robinson, Benjamin Joseph. “Hydrodynamic impacts of tectonics in prehistoric Ohiwa Harbour, North Island, New Zealand .” 2012. Web. 19 Apr 2021.

Vancouver:

Robinson BJ. Hydrodynamic impacts of tectonics in prehistoric Ohiwa Harbour, North Island, New Zealand . [Internet] [Masters thesis]. University of Waikato; 2012. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/10289/6478.

Council of Science Editors:

Robinson BJ. Hydrodynamic impacts of tectonics in prehistoric Ohiwa Harbour, North Island, New Zealand . [Masters Thesis]. University of Waikato; 2012. Available from: http://hdl.handle.net/10289/6478

Colorado State University

7. Turner, David. Fragility assessment of bridge superstructures under hydrodynamic forces.

Degree: MS(M.S.), Civil and Environmental Engineering, 2015, Colorado State University

URL: http://hdl.handle.net/10217/170400

► On September 11-17, 2013, Colorado suffered devastating and widespread flash flooding which spread 150 miles, from Colorado Springs north to Fort Collins impacting 24 counties.… (more)

Subjects/Keywords: bridge; fragility; hydrodynamic; superstructure

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APA (6^th Edition):

Turner, D. (2015). Fragility assessment of bridge superstructures under hydrodynamic forces. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/170400

Chicago Manual of Style (16^th Edition):

Turner, David. “Fragility assessment of bridge superstructures under hydrodynamic forces.” 2015. Masters Thesis, Colorado State University. Accessed April 19, 2021. http://hdl.handle.net/10217/170400.

MLA Handbook (7^th Edition):

Turner, David. “Fragility assessment of bridge superstructures under hydrodynamic forces.” 2015. Web. 19 Apr 2021.

Vancouver:

Turner D. Fragility assessment of bridge superstructures under hydrodynamic forces. [Internet] [Masters thesis]. Colorado State University; 2015. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/10217/170400.

Council of Science Editors:

Turner D. Fragility assessment of bridge superstructures under hydrodynamic forces. [Masters Thesis]. Colorado State University; 2015. Available from: http://hdl.handle.net/10217/170400

Delft University of Technology

8. Zhu, Rui (author). Hydrodynamic analysis for the Undaria pinnatifida (Wakame).

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:e5feea20-a183-4ed7-95bb-1fd077ab6724

► With the depletion of traditional energy sources, development of renewable energy is turning into a necessity. Besides wind energy and solar energy, another alternative renewable… (more)

▼ With the depletion of traditional energy sources, development of renewable energy is turning into a necessity. Besides wind energy and solar energy, another alternative renewable energy is biomass. Seaweed is seen as one of the most promising marine plants that can produce the biomass needed to partly satisfy of our future energy requirements. Seaweed cultivation is deemed as sustainable and environmentally friendly because it does not need fresh water, fertilizer and agricultural land. Furthermore, it converts greenhouse gases into oxygen and uptakes inorganic nitrogen and phosphorus from the seawater to avoid eutrophication. Stichting Noordzeeboerderij and MARIN (Maritime Research Institute The Netherlands) are working together to develop floating seaweed cultivation platforms for offshore. For this project, the loadings on the cultivation platform is interested. To accomplish this, this thesis will study the hydrodynamic characteristics of the seaweed, as they are the main contributors to the loading on the cultivation platform. Then the loading on the single blade of the seaweed is required to be predicted. In this research, two most common and highly economic value seaweed species are chosen, Undaria pinnatifida (Wakame) and Laminaria saccharina. This thesis describes an experiment that was conducted in the TU Delft Environmental Fluid and Mechanics laboratory. In this experiment, a current flume was used to investigate the hydrodynamic coefficients for the chosen types of seaweed. Before this, the physical and mechanical features such as density, geometrical and the flexural rigidity for the algae of interest were tested in MARIN workshop. Based on these feature parameters, an accurately designed surrogate (has the same or similar magnitude of parameters with the prototype) was constructed in order to imitate fresh algae for the flume experiments. During the experiment, the behavior of L.saccharina was found to be characterised by complex three-dimensional movement that is heavily influenced by the chaos pattern of the surrounding flow. Because the motions of Wakame are more planar so that easier to be simulated, Wakame was chosen to be the species to be studied in detail. Two numerical models, were written in MATLAB language, were computed for two movement phases in order to predict the loading and movement of an individual Wakame plant in a current. The first model is suitable for low velocities (0 to 0.57m/s) and simulates a swinging motion of the seaweed in the current. During this process, hydrodynamic force, hydrostatic force, friction and gravity are taken into account. The steady-state position that is predicted by the model in steady fluid is well matched with the results that were measured in the experiment in the same situation. The second model is used for large velocities (0.57m/s to 2.5m/s) when the structure is designed to have a horizontal position as its initial position and equilibrium position. A stable motion was simulated when the velocity varies from… Advisors/Committee Members: Metrikine, Andrei (mentor), Jarquin Laguna, Antonio (mentor), Lindeboom, René (mentor), Brouwers, Eef (mentor), Pisano, Federico (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Undaria pinnatifida; Hydrodynamic; Dynamics

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APA (6^th Edition):

Zhu, R. (. (2017). Hydrodynamic analysis for the Undaria pinnatifida (Wakame). (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:e5feea20-a183-4ed7-95bb-1fd077ab6724

Chicago Manual of Style (16^th Edition):

Zhu, Rui (author). “Hydrodynamic analysis for the Undaria pinnatifida (Wakame).” 2017. Masters Thesis, Delft University of Technology. Accessed April 19, 2021. http://resolver.tudelft.nl/uuid:e5feea20-a183-4ed7-95bb-1fd077ab6724.

MLA Handbook (7^th Edition):

Zhu, Rui (author). “Hydrodynamic analysis for the Undaria pinnatifida (Wakame).” 2017. Web. 19 Apr 2021.

Vancouver:

Zhu R(. Hydrodynamic analysis for the Undaria pinnatifida (Wakame). [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Apr 19]. Available from: http://resolver.tudelft.nl/uuid:e5feea20-a183-4ed7-95bb-1fd077ab6724.

Council of Science Editors:

Zhu R(. Hydrodynamic analysis for the Undaria pinnatifida (Wakame). [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:e5feea20-a183-4ed7-95bb-1fd077ab6724

Delft University of Technology

9. Haenen, Anner (author). A Study on the Potential of a Neural Network Based Model in Predicting Hydrodynamic Behavior of a Semi-Submersible Crane Vessel.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:80de3693-2483-468b-9dcc-5960288ca869

► Heerema Marine Contractors (HMC) is a contractor in the international offshore oil, gas and renewables industry. It is specialized in transporting, installing and removing large… (more)

▼ Heerema Marine Contractors (HMC) is a contractor in the international offshore oil, gas and renewables industry. It is specialized in transporting, installing and removing large offshore facilities. HMC operates three crane vessels. Two of which are semi-submersibles (Thialf and Balder), the other is the monohull Aegir. A third semi-submersible, the Sleipnir, is currently under construction. To ensure safe operations, make accurate fatigue predictions and extend operational windows, HMC relies on vessel motion calculations. Currently, vessel motion estimations are based on response amplitude operators calculated by the diffraction software package WAMIT. As HMC cannot rely on diffraction software in case of non-linear vessel motions, the need for a method capable of capturing non-linear effects arises. The goal of this study is to determine the potential of a neural network based model in predicting hydrodynamic behavior of semi-submersible crane vessels. Hindcast weather data, vessel motion measurements and model test data are used to train several different neural network architectures. The research into the potential of neural networks in predicting hydrodynamic behavior is split into two main categories: the frequency domain and the time domain. Within the frequency domain, wave forecasts can be used to predict a response spectrum. The neural network in this case acts as a conventional RAO. In an artificial environment, four architectures are tested and the results show that neural networks are able to make accurate predictions in a fully linear environment. When tested on project data, where the vessel sails at operational draft, the neural network predictions shows a slightly higher accuracy than the diffraction based predictions for the specific test case. Another network is tested on transit data, where the vessel sails at an inconvenient draft. The results from these tests show that there is potential for a neural network to be used as a substitute for Response Amplitude Operators. The time domain models focus on predicting ship response based on surface height signals and/or hindcast vessel motion measurements. The first model is trained and tested on model test data from an SSCV. The input of the neural network is surface height measurements and the output is pitch motion prediction. The model shows that it is capable of predicting both first and second order pitch motions. Another time domain model has MRU roll measurements as input and it tries to predict the future 60 seconds of roll motion. Many network topologies and optimizer settings are tested but none are capable of predicting future motions. Advisors/Committee Members: de Bruin, Ruben (mentor), Lourens, Eliz-Mari (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Neural Networks; Hydrodynamic behaviour

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APA (6^th Edition):

Haenen, A. (. (2018). A Study on the Potential of a Neural Network Based Model in Predicting Hydrodynamic Behavior of a Semi-Submersible Crane Vessel. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:80de3693-2483-468b-9dcc-5960288ca869

Chicago Manual of Style (16^th Edition):

Haenen, Anner (author). “A Study on the Potential of a Neural Network Based Model in Predicting Hydrodynamic Behavior of a Semi-Submersible Crane Vessel.” 2018. Masters Thesis, Delft University of Technology. Accessed April 19, 2021. http://resolver.tudelft.nl/uuid:80de3693-2483-468b-9dcc-5960288ca869.

MLA Handbook (7^th Edition):

Haenen, Anner (author). “A Study on the Potential of a Neural Network Based Model in Predicting Hydrodynamic Behavior of a Semi-Submersible Crane Vessel.” 2018. Web. 19 Apr 2021.

Vancouver:

Haenen A(. A Study on the Potential of a Neural Network Based Model in Predicting Hydrodynamic Behavior of a Semi-Submersible Crane Vessel. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Apr 19]. Available from: http://resolver.tudelft.nl/uuid:80de3693-2483-468b-9dcc-5960288ca869.

Council of Science Editors:

Haenen A(. A Study on the Potential of a Neural Network Based Model in Predicting Hydrodynamic Behavior of a Semi-Submersible Crane Vessel. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:80de3693-2483-468b-9dcc-5960288ca869

Delft University of Technology

10. Liu, Yun (author). Flexible Floating Island.

Degree: 2019, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:f9541b64-8e60-4605-991f-d7ac762b5fb0

► Nowadays, fears over rising sea levels due to global warming have prompted many countries with lands below sea level to find solutions to ensure the… (more)

▼ Nowadays, fears over rising sea levels due to global warming have prompted many countries with lands below sea level to find solutions to ensure the safety of nation and citizen. Furthermore, the development and utilization of marine resources have always been a topic of interest. Due to these necessities, the concept of flexible floating islands that can be used for fish farm, energy islands and residence has emerged. The flexible floating island consists of many smaller identical triangles connected by springs. This design is convenient for installation, disassembly, and diversification of functions. The main objective of this thesis is to investigate and analyze the forces acting on and motions of the flexible floating islands due to the interaction with regular waves; a numerical model is an excellent way to complete that mission. The floating islands in waves that are constrained with mooring lines have translational and rotational motions under the combined effect of hydrodynamic, hydrostatic, gravitational and mooring forces. The approach for solving the forces starts with linear potential theory, which means that uncompressed inviscid flow is assumed. After marking out the identical smaller panels on the wetted surfaces of each small triangle, the interface conditions between the triangle and the fluid are satisfied, thereby obtaining the source strength for each panel. With the expressions for the potentials, all the hydrodynamic coefficients including added mass, damping and wave exciting forces can be evaluated. Finally, the response of islands can be evaluated by using the equations of motions of the island in the time domain and converting them to the frequency domain. Two models are created in this thesis, a single island model and a two-island model, the former focuses on learning the methods for solving the hydromechanics coefficients, and the latter focuses on the hydrodynamic interaction between the two islands. Advisors/Committee Members: Metrikine, Andrei (mentor), Keijdener, Chris (mentor), Pisano, Federico (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: hydromechanics; potential theory; hydrodynamic interaction

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APA (6^th Edition):

Liu, Y. (. (2019). Flexible Floating Island. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:f9541b64-8e60-4605-991f-d7ac762b5fb0

Chicago Manual of Style (16^th Edition):

Liu, Yun (author). “Flexible Floating Island.” 2019. Masters Thesis, Delft University of Technology. Accessed April 19, 2021. http://resolver.tudelft.nl/uuid:f9541b64-8e60-4605-991f-d7ac762b5fb0.

MLA Handbook (7^th Edition):

Liu, Yun (author). “Flexible Floating Island.” 2019. Web. 19 Apr 2021.

Vancouver:

Liu Y(. Flexible Floating Island. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Apr 19]. Available from: http://resolver.tudelft.nl/uuid:f9541b64-8e60-4605-991f-d7ac762b5fb0.

Council of Science Editors:

Liu Y(. Flexible Floating Island. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:f9541b64-8e60-4605-991f-d7ac762b5fb0

University of Illinois – Urbana-Champaign

11. Lu, Xiaoyi. Hydrodynamic stability of a premixed flame subjected to transverse shear.

Degree: PhD, Theoretical & Applied Mechans, 2020, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/107896

► Flame instabilities arise intrinsically in combustion systems and have important implication in the operation of engineering devices. The primary intrinsic instability of premixed combustion is… (more)

▼ Flame instabilities arise intrinsically in combustion systems and have important implication in the operation of engineering devices. The primary intrinsic instability of premixed combustion is caused by thermal gas-expansion, known as the hydrodynamic or the Darrieus-Landau (DL) instability. Consequently, a premixed flame is susceptible to disturbances. The flame tends to develop a wrinkled or corrugated front with a cusp-like structure at a large scale. Once formed, the flame front always spikes towards the burned gas region and bows on the unburned gas region. The DL stability plays a crucial role in the hydrodynamic behaviors of a premixed flame and has many ramifications when premixed combustion takes place in practice. We study the hydrodynamic behavior of a premixed flame under the influence of a transversely shearing flow. A new problem configuration is proposed to gain a fundamental understanding of the premixed flame-shear interaction. The shear flow is introduced such that unburned and burned gases separated by the standard planar flame have opposite flow velocities in the flame transverse direction. This setting idealizes situations found in practical premixed combustion systems, for example, swirl-stabilized burners and gas turbines. Recent studies, made possible by Direct Numerical Simulations (DNS) and Large-Eddy Simulations (LES), have provided rich data for the description of premixed combustion in turbulent shear flows. And yet, little attention has been given to the effects of mean shear on the hydrodynamic stability. This work intends to fill the gap and shed some light on the premixed flame-shear interaction. This thesis presents a three-step study to address the linear, weakly nonlinear, and fully nonlinear stabilities of a premixed flame subjected to a transverse shear. First, the linear analysis extends the classical DL configuration and solves the linearized stability problem. The key result is a dispersion relation and its distinguished limits that reveal the conditions for the onset of hydrodynamic instability. Second, the weakly nonlinear analysis derives the modified Michelson-Sivashinsky (MS) equation, a time-dependent partial differential equation (PDE) describing the evolution of a hydrodynamically unstable premixed flame front in the weak thermal expansion limit. Solutions of the modified MS equation demonstrates the formation process of a skewed cusp-like flame pattern as well as the long-time behaviors beyond the linear regime when the premixed flame is affected by shear. The parametric study identifies the effect of each parameter on the flame dynamics. Third, a computational solver is developed for numerical simulations of premixed flames at the hydrodynamic flame-sheet level, based on the same mathematical formulation of linear and nonlinear analysis. Without restrictions on the amplitude of flame deformation and the density variation, the solver is used to conduct a series of numerical experiments to explore the fully nonlinear behaviors of premixed flames in a shearing flow. Advisors/Committee Members: Pantano, Carlos (advisor), Matalon, Moshe (Committee Chair), Fischer, Paul (committee member), Panesi, Marco (committee member).

Subjects/Keywords: premixed flames; hydrodynamic stability

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APA (6^th Edition):

Lu, X. (2020). Hydrodynamic stability of a premixed flame subjected to transverse shear. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/107896

Chicago Manual of Style (16^th Edition):

Lu, Xiaoyi. “Hydrodynamic stability of a premixed flame subjected to transverse shear.” 2020. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed April 19, 2021. http://hdl.handle.net/2142/107896.

MLA Handbook (7^th Edition):

Lu, Xiaoyi. “Hydrodynamic stability of a premixed flame subjected to transverse shear.” 2020. Web. 19 Apr 2021.

Vancouver:

Lu X. Hydrodynamic stability of a premixed flame subjected to transverse shear. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2020. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/2142/107896.

Council of Science Editors:

Lu X. Hydrodynamic stability of a premixed flame subjected to transverse shear. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2020. Available from: http://hdl.handle.net/2142/107896

University of Hawaii – Manoa

12. Yuan, Tiantian. Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3.

Degree: 2016, University of Hawaii – Manoa

URL: http://hdl.handle.net/10125/100785

►

Ph.D. University of Hawaii at Manoa 2012.

This thesis conducts the investigation into the metallicity history of galaxies between redshift 1 and 3, using gravitationally… (more)

▼

Ph.D. University of Hawaii at Manoa 2012.

This thesis conducts the investigation into the metallicity history of galaxies between redshift 1 and 3, using gravitationally lensed galaxies. We use metallicity as a tool to understand the formation and evolution history of galaxies. We direct our research in two areas. 1. We combine our new sample of gravitationally lensed galaxies with existing lensed and nonlensed samples to conduct the largest investigation so far into the mass-metallicity (MZ) relation at z > 1. We apply a self-consistent metallicity calibration scheme to investigate the metallicity evolution of star-forming galaxies as a function of redshift. We find that at the median redshift of z = 2.07, the median metallicity of the lensed sample is 0.35 dex lower than the local SDSS starforming galaxies and 0.18 dex lower than the z ∼ 0.8 DEEP2 galaxies. Our lensed sample shows a much larger metallicity range and scatter (> 0.2 dex) than the z ∼ 2 UV selected galaxies at similar masses. These offsets translate into a metallicity evolution of-0.23±0.01 dex per unit redshift from z ∼ 0 → 1, and-0.14 ± 0.08 dex per unit redshift from z ∼ 1 → 3. A more rapid evolution is seen between z ∼ 1 → 3 (with a mean fall in metallicity of-0.05 ± 0.01 dex Gyr−1) than z ∼ 0 → 1 (-0.020 ±0.001 dex Gyr−1). This evolution agrees with the most recent cosmological hydrodynamic simulations with momentum driven winds within the errors. 2. Combining the magnification power of gravitational lensing and AO-aided Integral Field Unit spectrographs (IFUs) is the only way to achieve sufficient signal-to-noise and angular resolution for spatially resolved metallicity studies. Using this technique, we present the first metallicity gradient measurement for a grand-design face-on spiral galaxy at z ∼ 1.5. The gradients of our spiral and another 2 lensed galaxies at z ∼ 2 are much steeper than local disk galaxies, supporting an "inside-out" galaxy formation scenario. We also report spatially resolved emission lines of a z ∼ 1 lensed galaxy. We find significant shock excitation due to galactic outflows. Our analysis suggests that shocked regions may mimic flat or inverted metallicity gradients at high redshift. We find that high angular resolution observations provide the most accurate metallicity gradient measurement,whereas seeing-limited studies under estimate the slope of the gradients

Subjects/Keywords: gravitational lensing; cosmological hydrodynamic simulations

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APA (6^th Edition):

Yuan, T. (2016). Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3. (Thesis). University of Hawaii – Manoa. Retrieved from http://hdl.handle.net/10125/100785

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yuan, Tiantian. “Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3.” 2016. Thesis, University of Hawaii – Manoa. Accessed April 19, 2021. http://hdl.handle.net/10125/100785.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yuan, Tiantian. “Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3.” 2016. Web. 19 Apr 2021.

Vancouver:

Yuan T. Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3. [Internet] [Thesis]. University of Hawaii – Manoa; 2016. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/10125/100785.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yuan T. Using strong gravitationally lensed galaxies to probe the metallicity history of star-forming galaxies between redshift 1 and 3. [Thesis]. University of Hawaii – Manoa; 2016. Available from: http://hdl.handle.net/10125/100785

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Iowa State University

13. De Alwis, Steven Hiran. Hydrodynamic cavitation for scalable exfoliation of few layered graphene nanosheets.

Degree: 2020, Iowa State University

URL: https://lib.dr.iastate.edu/etd/18303

► A simple method for scalable exfoliation of biocompatible few layered graphene (FLG) dispersions is developed using an inexpensive hydrodynamic cavitation setup. Hydrodynamic cavitation is used… (more)

Subjects/Keywords: Biocompatible; Cavitation; Graphene; Hydrodynamic

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APA (6^th Edition):

De Alwis, S. H. (2020). Hydrodynamic cavitation for scalable exfoliation of few layered graphene nanosheets. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/18303

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

De Alwis, Steven Hiran. “Hydrodynamic cavitation for scalable exfoliation of few layered graphene nanosheets.” 2020. Thesis, Iowa State University. Accessed April 19, 2021. https://lib.dr.iastate.edu/etd/18303.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

De Alwis, Steven Hiran. “Hydrodynamic cavitation for scalable exfoliation of few layered graphene nanosheets.” 2020. Web. 19 Apr 2021.

Vancouver:

De Alwis SH. Hydrodynamic cavitation for scalable exfoliation of few layered graphene nanosheets. [Internet] [Thesis]. Iowa State University; 2020. [cited 2021 Apr 19]. Available from: https://lib.dr.iastate.edu/etd/18303.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

De Alwis SH. Hydrodynamic cavitation for scalable exfoliation of few layered graphene nanosheets. [Thesis]. Iowa State University; 2020. Available from: https://lib.dr.iastate.edu/etd/18303

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cambridge

14. Meng, Luwen. Hydrodynamically modulated voltammetry in microreactors.

Degree: PhD, 2019, University of Cambridge

URL: https://doi.org/10.17863/CAM.35767 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767762

► This thesis describes modulated methods using both voltammetric and microfluidic perturbations to study mechanisms of electrolysis reactions. The initial chapters provide an overview of applications… (more)

▼ This thesis describes modulated methods using both voltammetric and microfluidic perturbations to study mechanisms of electrolysis reactions. The initial chapters provide an overview of applications and research development in the fields of micro-engineering and electrochemistry, including microfabrication methodology, electrochemical detection techniques and analysis methods. Some typical electrochemical reactions have been studied for different kinds of industrial applications. Also hydrodynamic modulation methods have been investigated. The result chapters begin in Chapter 3 with detailed investigation of various electrochemical reactions by using cyclic voltammetry (CV) and large amplitude Fourier transformed alternating current voltammetry (FTACV) under microfluidic conditions. Single electron transfer reactions with different kinetics were studied first by using potassium ferrocyanide and ferrocenecarboxylic acid (FCA). Dual electron transfer reactions with different pathways were investigated by using 2,5-dihydroxybenzoic acid for one step oxidation and N,N,N',N'-tetramethyl-para-phenylene-diamine (TMPD) for two consecutive one-electron step oxidation. An irreversible reaction was explored by using borohydride solution. Examples of homogeneous reaction mechanisms were studied by using the combinations of Fe(CN)64-/L-cysteine or TMPD/ascorbic acid. The current response of all the electrolysis reactions except single electron transfer reactions was first reported under microfluidic conditions with FTACV, which has shown sensitive with the change of volume flow rates and the substrate concentrations when homogeneous reactions are involved. The linear relationships between peak current and volume flow rates or substrate concentrations can be obtained in every harmonic component. In chapter 4, the modulated technique was applied to microfluidic hydrodynamic systems. A range of electrolysis mechanisms including single electron transfer reactions, dual electron transfer reactions, irreversible reaction and homogeneous reactions were studied under hydrodynamic modulated conditions. The system showed rapid response with the change of volume flow rates during one measurement. The linear relationships between peak current and flow rates, as well as substrate concentrations, can be obtained simultaneously in one scan, which reveals a promising approach to get more information in a short-time measurement. Chapter 5 demonstrated a new protocol by forcing an oscillation of the electrochemical active solution flowing. Analysis of transition time and its effect on limiting current are presented to begin exploration of this new tool for supporting researchers on understanding redox mechanisms. A short simulated study was carried out to help better understand the mechanism under different hydrodynamic conditions.

Subjects/Keywords: 660; microreactors; electrochemistry; hydrodynamic modulation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Meng, L. (2019). Hydrodynamically modulated voltammetry in microreactors. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.35767 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767762

Chicago Manual of Style (16^th Edition):

Meng, Luwen. “Hydrodynamically modulated voltammetry in microreactors.” 2019. Doctoral Dissertation, University of Cambridge. Accessed April 19, 2021. https://doi.org/10.17863/CAM.35767 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767762.

MLA Handbook (7^th Edition):

Meng, Luwen. “Hydrodynamically modulated voltammetry in microreactors.” 2019. Web. 19 Apr 2021.

Vancouver:

Meng L. Hydrodynamically modulated voltammetry in microreactors. [Internet] [Doctoral dissertation]. University of Cambridge; 2019. [cited 2021 Apr 19]. Available from: https://doi.org/10.17863/CAM.35767 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767762.

Council of Science Editors:

Meng L. Hydrodynamically modulated voltammetry in microreactors. [Doctoral Dissertation]. University of Cambridge; 2019. Available from: https://doi.org/10.17863/CAM.35767 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767762

15. Almeida, Ana Paula Fonseca de. Caracterização e avaliação de colunas de recheio utilizando radiotraçadores.

Degree: 2019, Instituto de Engenharia Nuclear; Mestrado em Ciências e Tecnologias Nucleares; IEN; Brasil; Instituto de Engenharia Nuclear

URL: http://carpedien.ien.gov.br:8080/handle/ien/3006

►

Submitted by Almir Azevedo ([email protected]) on 2019-12-06T16:40:35Z No. of bitstreams: 1 dissertação mestrado ien 2019 Ana Paula F. de Almeida.pdf: 2606434 bytes, checksum: 191cfc7a75907e8338ab9240be21f5c1 (MD5)… (more)

▼

Submitted by Almir Azevedo ([email protected]) on 2019-12-06T16:40:35Z No. of bitstreams: 1 dissertação mestrado ien 2019 Ana Paula F. de Almeida.pdf: 2606434 bytes, checksum: 191cfc7a75907e8338ab9240be21f5c1 (MD5)

Made available in DSpace on 2019-12-06T16:40:35Z (GMT). No. of bitstreams: 1 dissertação mestrado ien 2019 Ana Paula F. de Almeida.pdf: 2606434 bytes, checksum: 191cfc7a75907e8338ab9240be21f5c1 (MD5) Previous issue date: 2019-04

Colunas de recheio são extremamente importantes na indústria química e são usadas para processos de purificação, separação e tratamento de misturas de gás ou líquidos. O objetivo deste trabalho foi estudar a hidrodinâmica do fluido para a caracterização de padrões de fluxo de fase aquosa na coluna de recheio, associando à metodologia das curvas da Distribuição do Tempo de Residência (RTD) para analisar e associar modelos teóricos que possam descrever as condições operacionais da coluna. A Distribuição do Te mpo de Residência pode ser obtida com a utilização da técnica estímulo-resposta que é caracterizada pela injeção instantânea de um radiotraçador na entrada do sistema. Neste trabalho, foi utilizado o 68 Ga como radiotraçador. Cinco detectores cintiladores N aI(Tl) 1x1" blindados e colimados adequadamente foram posicionados para registrar o movimento de percurso do radiotra ç ador na coluna de recheio. Possibilitando a análise da curva de Distribuição do Tempo de Residência nas regiões de interesse. Com os dados gerados pelos detectores NaI(Tl) com a passagem do radiotraçador n o interior da coluna, foi possível avaliar o perfil de fluxo da fase aquosa e identificar falhas operacionais, como canalização interna e existência de zona de retenção no interior da colun a. Foram utilizados modelos teóricos para escoamentos de fluxo diferentes: o fluxo pistão , misturador perfeito, n misturador perfeito em série e dispersão axial.

Packed columns are extremely important in chemical industry and are used for processes of purification, separation and treatment of gas or liquid mixtures. The aim of this work was to study the hydrodynamics of fluid for the characterization of aqueous phase flow patterns in the packed columns, associating the methodology of the curves of the residence time distribution (RTD) to analyze the theoretical models that might describe the operational conditions of the column. The residence time distribution can be obtained with the use of stimulus-response technique that is characterized by instantaneous injection of a radiotracer at the entrance to the system. In this work, the 68Ga was used as radiotracer. Five detectors scintillators NaI(Tl) 1x1" shielded and collimated properly were positioned to register the movement of radiotracer route in the packed column. Enabling the residence time distribution curve analysis in the regions of interest. The data generated by NaI(Tl) detectors with the passage of radiotracer in inside the column, it was possible to evaluate the profile of flow of aqueous phase and identify operational failures,…

Advisors/Committee Members: Brandão, Luís Eduardo Barreira, Salgado, César Marques, Moreira, Maria de Lourdes, Silva, Ademir Xavier da, Salgado, Cesar Marques, Brandão, Luís Eduardo Barreira Brandão.

Subjects/Keywords: Radiotracers; Filling column; RTD; Hydrodynamic

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APA (6^th Edition):

Almeida, A. P. F. d. (2019). Caracterização e avaliação de colunas de recheio utilizando radiotraçadores. (Masters Thesis). Instituto de Engenharia Nuclear; Mestrado em Ciências e Tecnologias Nucleares; IEN; Brasil; Instituto de Engenharia Nuclear. Retrieved from http://carpedien.ien.gov.br:8080/handle/ien/3006

Chicago Manual of Style (16^th Edition):

Almeida, Ana Paula Fonseca de. “Caracterização e avaliação de colunas de recheio utilizando radiotraçadores.” 2019. Masters Thesis, Instituto de Engenharia Nuclear; Mestrado em Ciências e Tecnologias Nucleares; IEN; Brasil; Instituto de Engenharia Nuclear. Accessed April 19, 2021. http://carpedien.ien.gov.br:8080/handle/ien/3006.

MLA Handbook (7^th Edition):

Almeida, Ana Paula Fonseca de. “Caracterização e avaliação de colunas de recheio utilizando radiotraçadores.” 2019. Web. 19 Apr 2021.

Vancouver:

Almeida APFd. Caracterização e avaliação de colunas de recheio utilizando radiotraçadores. [Internet] [Masters thesis]. Instituto de Engenharia Nuclear; Mestrado em Ciências e Tecnologias Nucleares; IEN; Brasil; Instituto de Engenharia Nuclear; 2019. [cited 2021 Apr 19]. Available from: http://carpedien.ien.gov.br:8080/handle/ien/3006.

Council of Science Editors:

Almeida APFd. Caracterização e avaliação de colunas de recheio utilizando radiotraçadores. [Masters Thesis]. Instituto de Engenharia Nuclear; Mestrado em Ciências e Tecnologias Nucleares; IEN; Brasil; Instituto de Engenharia Nuclear; 2019. Available from: http://carpedien.ien.gov.br:8080/handle/ien/3006

NSYSU

16. Shen, Meng-hui. Form Error Compensation of axially symmetrical surface:Rock-and-Roll motion planning of tool.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2007, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0910107-103130

► A process planning strategy was proposed to suppress the wear effect of tool in a polishing of axially symmetrical work. This strategy can keep machining… (more)

Subjects/Keywords: wear; hydrodynamic polishing

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APA (6^th Edition):

Shen, M. (2007). Form Error Compensation of axially symmetrical surface:Rock-and-Roll motion planning of tool. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0910107-103130

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shen, Meng-hui. “Form Error Compensation of axially symmetrical surface:Rock-and-Roll motion planning of tool.” 2007. Thesis, NSYSU. Accessed April 19, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0910107-103130.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shen, Meng-hui. “Form Error Compensation of axially symmetrical surface:Rock-and-Roll motion planning of tool.” 2007. Web. 19 Apr 2021.

Vancouver:

Shen M. Form Error Compensation of axially symmetrical surface:Rock-and-Roll motion planning of tool. [Internet] [Thesis]. NSYSU; 2007. [cited 2021 Apr 19]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0910107-103130.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shen M. Form Error Compensation of axially symmetrical surface:Rock-and-Roll motion planning of tool. [Thesis]. NSYSU; 2007. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0910107-103130

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

17. Tsai, Tzu-dang. Study on Lubricating Properties of Emulsions in Cold Rolling.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2009, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814109-164505

► In this study, a model suitable for the plasto-hydrodynamic lubrication of cold rolling with the oil-in-water emulsions has been developed. The coupled modified Reynolds and… (more)

Subjects/Keywords: emulsion; plasto-hydrodynamic lubrication; oil pooling

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APA (6^th Edition):

Tsai, T. (2009). Study on Lubricating Properties of Emulsions in Cold Rolling. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814109-164505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tsai, Tzu-dang. “Study on Lubricating Properties of Emulsions in Cold Rolling.” 2009. Thesis, NSYSU. Accessed April 19, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814109-164505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tsai, Tzu-dang. “Study on Lubricating Properties of Emulsions in Cold Rolling.” 2009. Web. 19 Apr 2021.

Vancouver:

Tsai T. Study on Lubricating Properties of Emulsions in Cold Rolling. [Internet] [Thesis]. NSYSU; 2009. [cited 2021 Apr 19]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814109-164505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tsai T. Study on Lubricating Properties of Emulsions in Cold Rolling. [Thesis]. NSYSU; 2009. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0814109-164505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

18. Darnell, Joel T. Nowcast/forecast of storm surge and drawdown using a hybrid FE/ANN approach.

Degree: M.Oc.E., Ocean Engineering, 2004, Oregon State University

URL: http://hdl.handle.net/1957/22442

► In the northwestern Gulf of Mexico there is a need for reliable water level forecasts to facilitate safe commercial navigation, marine construction, and emergency management.… (more)

▼ In the northwestern Gulf of Mexico there is a need for reliable water level forecasts to facilitate safe commercial navigation, marine construction, and emergency management. Though the low amplitude tides of the region can be predicted with conventional harmonic techniques, frequent strong storms make accurate forecasts of water levels difficult. Prediction of surge associated with storms is useful for management of activities in low lying coastal areas subject to flooding, while prediction of drawdown is important for estimating the under keel clearance of deep draft vessels. First, this thesis presents the analysis of nine years of observations to quantify the effects of extra-tropical storms on water level fluctuations at four locations along the northwestern coast of the Gulf of Mexico. The monthly root-mean-square of the meteorological component of the observed water level is shown to be of similar magnitude to the astronomical tide from September to April, attributed to the weekly passage of storm systems. Return periods for extreme maximum (surge) and minimum (drawdown) meteorological water levels associated with these storms are computed using a 9-year record of observed water levels. Significant surge and drawdown water levels, defined as those exceeding 30 cm, are shown to have return periods ranging from 0.17 to 7.14 years at the four stations studied. At the entrance to Galveston Bay, Texas, both significant storm surge and drawdown can be expected to occur about four times each year. These results reinforced the need to include meteorological forcing in the forecasting of water levels in the region. In an effort to provide more accurate water level forecasting within Galveston Bay during storms, the finite element (FE) hydrodynamic model ADCIRC was applied to simulate a range of observed storm events by inclusion of wind stress and remote forcing from the Gulf of Mexico. Comparisons with observations showed the limited accuracy of ADCIRC, as applied here, in predicting the water level response for drawdown events. Thus, the ADCIRC output was incorporated into a data assimilation method utilizing artificial neural networks (ANN). This hybrid FE/ANN approach substantially improved the pure FE simulations for short term forecasts and also outperformed other forecasting methods. With further refinement, this hybrid approach could provide operational forecasts of water levels within Galveston Bay during storms. Advisors/Committee Members: Cox, Daniel T. (advisor), Haller, Merrick (committee member).

Subjects/Keywords: Hydrodynamic weather forecasting

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APA (6^th Edition):

Darnell, J. T. (2004). Nowcast/forecast of storm surge and drawdown using a hybrid FE/ANN approach. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/22442

Chicago Manual of Style (16^th Edition):

Darnell, Joel T. “Nowcast/forecast of storm surge and drawdown using a hybrid FE/ANN approach.” 2004. Masters Thesis, Oregon State University. Accessed April 19, 2021. http://hdl.handle.net/1957/22442.

MLA Handbook (7^th Edition):

Darnell, Joel T. “Nowcast/forecast of storm surge and drawdown using a hybrid FE/ANN approach.” 2004. Web. 19 Apr 2021.

Vancouver:

Darnell JT. Nowcast/forecast of storm surge and drawdown using a hybrid FE/ANN approach. [Internet] [Masters thesis]. Oregon State University; 2004. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/1957/22442.

Council of Science Editors:

Darnell JT. Nowcast/forecast of storm surge and drawdown using a hybrid FE/ANN approach. [Masters Thesis]. Oregon State University; 2004. Available from: http://hdl.handle.net/1957/22442

University of California – San Diego

19. Kjolsing, Eric. Investigations Supporting the Development of a Downhole Energy Harvesting System.

Degree: Structural Engineering, 2016, University of California – San Diego

URL: http://www.escholarship.org/uc/item/6qc6k79t

► Hydrocarbon well operators deploy downhole reservoir monitoring equipment in order to optimize the rate at which hydrocarbons are extracted. Alternative power sources are sought that… (more)

Subjects/Keywords: Engineering; Energy Harvesting; Hydrocarbon; Hydrodynamic Function; Piezoelectric

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APA (6^th Edition):

Kjolsing, E. (2016). Investigations Supporting the Development of a Downhole Energy Harvesting System. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/6qc6k79t

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kjolsing, Eric. “Investigations Supporting the Development of a Downhole Energy Harvesting System.” 2016. Thesis, University of California – San Diego. Accessed April 19, 2021. http://www.escholarship.org/uc/item/6qc6k79t.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kjolsing, Eric. “Investigations Supporting the Development of a Downhole Energy Harvesting System.” 2016. Web. 19 Apr 2021.

Vancouver:

Kjolsing E. Investigations Supporting the Development of a Downhole Energy Harvesting System. [Internet] [Thesis]. University of California – San Diego; 2016. [cited 2021 Apr 19]. Available from: http://www.escholarship.org/uc/item/6qc6k79t.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kjolsing E. Investigations Supporting the Development of a Downhole Energy Harvesting System. [Thesis]. University of California – San Diego; 2016. Available from: http://www.escholarship.org/uc/item/6qc6k79t

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

20. Saddoris, David Allan. Hydrodynamic separator sediment washout testing.

Degree: MS, Civil Engineering, 2010, University of Minnesota

URL: http://purl.umn.edu/93641

►

University of Minnesota M.S. thesis. July 2010. Major: Civil Engineering. Advisors: Omid Mohseni, John Gulliver. 1 computer file (PDF); vi, 53 pages.

Hydrodynamic separators are… (more)

▼

University of Minnesota M.S. thesis. July 2010. Major: Civil Engineering. Advisors: Omid Mohseni, John Gulliver. 1 computer file (PDF); vi, 53 pages.

Hydrodynamic separators are widely used in urban areas for removal of suspended sediments and floatables from stormwater due to limited land availability for the installation of above ground stormwater best management practices (BMPs). Hydrodynamic separators are often sized based on relatively frequent storm events. However, during less frequent storm events, device design treatment rates are exceeded and previously captured sediments can be washed out of the devices. To study the potential for scour and washout of previously deposited sediments in the sumps of hydrodynamic separators under high flow conditions during infrequent storm events, sediment washout testing methods using mass balance were developed for both controlled field testing and laboratory testing. The developed testing methods were utilized to conduct sediment washout testing on three full scale hydrodynamic separators: 1) an Environment21 V2B1 Model 4, 2) a STC1200 Stormceptor and 3) a 6-ft Downstream Defender. All three devices were tested in the laboratory. The Environment21 V2B1 device was also tested in the field. In addition to full scale testing, two scale models were constructed and tested in the laboratory. Previous work by others on describing sediment washout in standard stormwater sumps was applied to data obtained from the sediment washout tests to develop sediment washout functions which incorporate non-dimensional parameters. Washout functions were developed for each of the devices tested in the laboratory and the field, as well as for a modified ecoStorm device previously tested by others. The washout functions that were developed can be incorporated, along with removal efficiency functions, into continuous urban runoff models to predict maintenance schedules for hydrodynamic separator devices.

Advisors/Committee Members: Omid Mohseni, John Gulliver.

Subjects/Keywords: Hydrodynamic separators; Stormwater; Sediment; Washout; Civil Engineering

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APA (6^th Edition):

Saddoris, D. A. (2010). Hydrodynamic separator sediment washout testing. (Masters Thesis). University of Minnesota. Retrieved from http://purl.umn.edu/93641

Chicago Manual of Style (16^th Edition):

Saddoris, David Allan. “Hydrodynamic separator sediment washout testing.” 2010. Masters Thesis, University of Minnesota. Accessed April 19, 2021. http://purl.umn.edu/93641.

MLA Handbook (7^th Edition):

Saddoris, David Allan. “Hydrodynamic separator sediment washout testing.” 2010. Web. 19 Apr 2021.

Vancouver:

Saddoris DA. Hydrodynamic separator sediment washout testing. [Internet] [Masters thesis]. University of Minnesota; 2010. [cited 2021 Apr 19]. Available from: http://purl.umn.edu/93641.

Council of Science Editors:

Saddoris DA. Hydrodynamic separator sediment washout testing. [Masters Thesis]. University of Minnesota; 2010. Available from: http://purl.umn.edu/93641

University of Tasmania

21. Leong, ZQ. Effects of hydrodynamic interaction on an AUV operating close to a moving submarine.

Degree: 2014, University of Tasmania

URL: https://eprints.utas.edu.au/22899/2/Leong_whole_thesis_ex_pub_mat.pdf ; https://eprints.utas.edu.au/22899/1/Leong_whole_thesis.pdf

► The work detailed in this thesis investigates the behaviour of the hydrodynamic interaction effects acting on an unappended AUV manoeuvring in proximity to a larger… (more)

▼ The work detailed in this thesis investigates the behaviour of the hydrodynamic interaction effects acting on an unappended AUV manoeuvring in proximity to a larger moving underwater vehicle such as a submarine. The investigation examined the steady-state and transient interaction effects on the hydrodynamic coefficients of the AUV as a function of the relative: speed, longitudinal position, lateral position, and size between the two submerged vehicles. The work involved extensive development of Computational Fluid Dynamics (CFD) models to simulate the manoeuvres in order to map the interaction behaviour. Experimental Fluid Dynamics (EFD) involving captive-model tests of the two vehicles were carried out to validate and supplement the CFD data. The results show that the hydrodynamic interaction acts to attract and repel the AUV at the stern and bow regions around the submarine, respectively. The magnitude of these attraction and repulsion interaction effects varied significantly due to small changes in the relative longitudinal position, suggesting the need of an accurate and fast responsive control system for the AUV to adequately maintain its trajectory around the submarine. These adverse interaction effects were found to be minimal around amidships of the moving submarine, suggesting a safe path for the AUV to approach or depart the submarine laterally within that region. In addition, the interaction effects on the hydrodynamic coefficients of the AUV were shown to reduce as the relative speed of the latter increased. Due to the need to simulate large relative motions between the two vehicles, this thesis also investigate and identifies the merits of two dynamic mesh techniques within ANSYS CFX (i.e. Immersed Solids, and AMP Re-Meshing) to simulate multiple bodies in relative motion. Although the numerical models behind the techniques have undergone substantial development in recent years, as they are beta-features in ANSYS CFX there are currently no existing studies demonstrating their capabilities in modelling multiple bodies in relative motion. The developed CFD simulation models are suitable for future work involving appended AUVs and the coupling with a control system for manoeuvring simulations of multiple underwater vehicles.

Subjects/Keywords: Hydrodynamic; Interaction; Underwater; Vehicles; AUV; Submarine; interoperation

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APA (6^th Edition):

Leong, Z. (2014). Effects of hydrodynamic interaction on an AUV operating close to a moving submarine. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/22899/2/Leong_whole_thesis_ex_pub_mat.pdf ; https://eprints.utas.edu.au/22899/1/Leong_whole_thesis.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Leong, ZQ. “Effects of hydrodynamic interaction on an AUV operating close to a moving submarine.” 2014. Thesis, University of Tasmania. Accessed April 19, 2021. https://eprints.utas.edu.au/22899/2/Leong_whole_thesis_ex_pub_mat.pdf ; https://eprints.utas.edu.au/22899/1/Leong_whole_thesis.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Leong, ZQ. “Effects of hydrodynamic interaction on an AUV operating close to a moving submarine.” 2014. Web. 19 Apr 2021.

Vancouver:

Leong Z. Effects of hydrodynamic interaction on an AUV operating close to a moving submarine. [Internet] [Thesis]. University of Tasmania; 2014. [cited 2021 Apr 19]. Available from: https://eprints.utas.edu.au/22899/2/Leong_whole_thesis_ex_pub_mat.pdf ; https://eprints.utas.edu.au/22899/1/Leong_whole_thesis.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Leong Z. Effects of hydrodynamic interaction on an AUV operating close to a moving submarine. [Thesis]. University of Tasmania; 2014. Available from: https://eprints.utas.edu.au/22899/2/Leong_whole_thesis_ex_pub_mat.pdf ; https://eprints.utas.edu.au/22899/1/Leong_whole_thesis.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University

22. Prabhu T. Hydrodynamic design of a centrifugal pump impeller;.

Degree: 2013, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/14078

►

The world of fluid machinery is vast and widespread having its wings in all aspects of life. From agriculture to air-conditioning, fluid machinery play an… (more)

Subjects/Keywords: Hydrodynamic; centrifugal; computation fluid dynamics; impeller; pump

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APA (6^th Edition):

T, P. (2013). Hydrodynamic design of a centrifugal pump impeller;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/14078

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

T, Prabhu. “Hydrodynamic design of a centrifugal pump impeller;.” 2013. Thesis, Anna University. Accessed April 19, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/14078.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

T, Prabhu. “Hydrodynamic design of a centrifugal pump impeller;.” 2013. Web. 19 Apr 2021.

Vancouver:

T P. Hydrodynamic design of a centrifugal pump impeller;. [Internet] [Thesis]. Anna University; 2013. [cited 2021 Apr 19]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/14078.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

T P. Hydrodynamic design of a centrifugal pump impeller;. [Thesis]. Anna University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/14078

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Anna University

23. Sundaramoorthy N. Experimental investigation on hydrodynamic suspension and mixing time characteristics of jet mixer;.

Degree: hydrodynamic suspension and mixing time characteristics of jet mixer, 2014, Anna University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/26035

►

The work on holdup mixing time and solid suspension in jet mixer newlinewith top entry nozzle is very few Hence, an experimental and theoretical newlinestudy… (more)

Subjects/Keywords: hydrodynamic suspension; mechanical engineering; mixing time characteristics

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APA (6^th Edition):

N, S. (2014). Experimental investigation on hydrodynamic suspension and mixing time characteristics of jet mixer;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/26035

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

N, Sundaramoorthy. “Experimental investigation on hydrodynamic suspension and mixing time characteristics of jet mixer;.” 2014. Thesis, Anna University. Accessed April 19, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/26035.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

N, Sundaramoorthy. “Experimental investigation on hydrodynamic suspension and mixing time characteristics of jet mixer;.” 2014. Web. 19 Apr 2021.

Vancouver:

N S. Experimental investigation on hydrodynamic suspension and mixing time characteristics of jet mixer;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Apr 19]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/26035.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

N S. Experimental investigation on hydrodynamic suspension and mixing time characteristics of jet mixer;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/26035

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan

24. Martinez Soberanes, Edgar Enrique 1989-. An Adaptable Single-cell Trapping Device for a Wide Range of Cell Sizes.

Degree: 2016, University of Saskatchewan

URL: http://hdl.handle.net/10388/7505

► In the last two decades many microfluidic devices have been developed in order to provide better and more reliable tools for biological assays and analysis.… (more)

▼ In the last two decades many microfluidic devices have been developed in order to provide better and more reliable tools for biological assays and analysis. Microfluidic technology has proven its functionality and advantages over conventional cellomics methods such as flow cytometry (FC) and laser scanning cytometry (LSC) in particular for processes that require the analysis of single cells. Different microfluidic platforms capable of capturing, positioning, and sorting single cells have been developed; however, such devices are incapable of working with various sizes of cells. Therefore, once a device has been designed and fabricated it is not possible to modify its dimensions so a new device is required for each different cell size for analysis. In an effort to overcome the limitation of adaptability of microfluidic cell trapping devices, this thesis presents a new microfluidic single cell-trapping device capable of capturing cells of various diameters. This thesis conducts a review and analysis of several microfluidic cell trapping devices under the FCBPSS (function-context-behavior-principle-state-structure) framework to have a better understanding and classification of the most relevant microfluidic devices, followed by the design of a new device capable of trapping large batches of single cells and modifying its physical features in order to work with multiple sizes of cells. The design process of the new device is based on and guided by the Axiomatic Design Theory. From the thorough review of the literature, it was concluded that the most suitable structure to demonstrate the concept proposed on this thesis an array of single cell trappers, and the best tuning method would be a mechanical stretching to generate a uniform distributed strain on the device. After designing and modeling the new device, it was imperative for this research to fabricate a device which could be tested in accordance with the literature. The final device consists of two thin layers of polydimethylsiloxane (PDMS), one of which bears trapezoidal microstructures (traps) to physically capture cells. The size of the traps can be modified by stretching the device via a uniform distributed force, which is applied using a stretching apparatus. Finally, the performance of the new device was assessed by conducting two main experiments. The first experiment consisted of characterizing the mechanical behavior of the device when different strains were applied. It has been found that all the traps of the device have a uniform deformation when a strain is applied, and the minimum size increment permitted by the stretching apparatus is of 2μm.The second experiment was done in order to characterize the hydrodynamical and trapping behavior of the device. By using water-in-oil microspheres of various sizes the trapping of particles was demonstrated; it was determined that the device can capture particles between 20μm and 30μm. To demonstrate cell viability, the device was tested using melanoma cells. No visible damage onto the cells was observed after… Advisors/Committee Members: Zhang, Chris, Badea, Ildiko, Yang, Qiaoqin, Szpunar, Jerzy A, Deters, Ralph.

Subjects/Keywords: Microfluidics; Hydrodynamic; Single-cell; Trapping; Adaptable

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APA (6^th Edition):

Martinez Soberanes, E. E. 1. (2016). An Adaptable Single-cell Trapping Device for a Wide Range of Cell Sizes. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/7505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Martinez Soberanes, Edgar Enrique 1989-. “An Adaptable Single-cell Trapping Device for a Wide Range of Cell Sizes.” 2016. Thesis, University of Saskatchewan. Accessed April 19, 2021. http://hdl.handle.net/10388/7505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Martinez Soberanes, Edgar Enrique 1989-. “An Adaptable Single-cell Trapping Device for a Wide Range of Cell Sizes.” 2016. Web. 19 Apr 2021.

Vancouver:

Martinez Soberanes EE1. An Adaptable Single-cell Trapping Device for a Wide Range of Cell Sizes. [Internet] [Thesis]. University of Saskatchewan; 2016. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/10388/7505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Martinez Soberanes EE1. An Adaptable Single-cell Trapping Device for a Wide Range of Cell Sizes. [Thesis]. University of Saskatchewan; 2016. Available from: http://hdl.handle.net/10388/7505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

25. Mishra, Aashwin A. The Art and Science in Modeling the Pressure-Velocity Interactions.

Degree: PhD, Aerospace Engineering, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/153358

► The objective of this investigation is to develop a single point model for the global effects of pressure in turbulence, while striking a judicious balance… (more)

Subjects/Keywords: Fluid Mechanics; Turbulence Theory; Hydrodynamic Stability

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APA (6^th Edition):

Mishra, A. A. (2014). The Art and Science in Modeling the Pressure-Velocity Interactions. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/153358

Chicago Manual of Style (16^th Edition):

Mishra, Aashwin A. “The Art and Science in Modeling the Pressure-Velocity Interactions.” 2014. Doctoral Dissertation, Texas A&M University. Accessed April 19, 2021. http://hdl.handle.net/1969.1/153358.

MLA Handbook (7^th Edition):

Mishra, Aashwin A. “The Art and Science in Modeling the Pressure-Velocity Interactions.” 2014. Web. 19 Apr 2021.

Vancouver:

Mishra AA. The Art and Science in Modeling the Pressure-Velocity Interactions. [Internet] [Doctoral dissertation]. Texas A&M University; 2014. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/1969.1/153358.

Council of Science Editors:

Mishra AA. The Art and Science in Modeling the Pressure-Velocity Interactions. [Doctoral Dissertation]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/153358

Texas A&M University

26. Batra, Jaskirat Singh. Advanced 3D Printing to Fabricate Microfluidic Devices for Cancer and Stem Cells Co-culture Study in Space.

Degree: MS, Electrical Engineering, 2015, Texas A&M University

URL: http://hdl.handle.net/1969.1/166561

► Two different type of microfluidic devices were designed, fabricated and tested to capture the microspheres. The passive device seems to be more reliable because of… (more)

Subjects/Keywords: Microfluidics; 3D printing; Microfabrication; Hydrodynamic trapping

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APA (6^th Edition):

Batra, J. S. (2015). Advanced 3D Printing to Fabricate Microfluidic Devices for Cancer and Stem Cells Co-culture Study in Space. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/166561

Chicago Manual of Style (16^th Edition):

Batra, Jaskirat Singh. “Advanced 3D Printing to Fabricate Microfluidic Devices for Cancer and Stem Cells Co-culture Study in Space.” 2015. Masters Thesis, Texas A&M University. Accessed April 19, 2021. http://hdl.handle.net/1969.1/166561.

MLA Handbook (7^th Edition):

Batra, Jaskirat Singh. “Advanced 3D Printing to Fabricate Microfluidic Devices for Cancer and Stem Cells Co-culture Study in Space.” 2015. Web. 19 Apr 2021.

Vancouver:

Batra JS. Advanced 3D Printing to Fabricate Microfluidic Devices for Cancer and Stem Cells Co-culture Study in Space. [Internet] [Masters thesis]. Texas A&M University; 2015. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/1969.1/166561.

Council of Science Editors:

Batra JS. Advanced 3D Printing to Fabricate Microfluidic Devices for Cancer and Stem Cells Co-culture Study in Space. [Masters Thesis]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/166561

Texas A&M University

27. Cable, Travis Alexander. Analysis of Oil Lubricated Thrust Collars for Application in Integrally Geared Compressors.

Degree: MS, Mechanical Engineering, 2015, Texas A&M University

URL: http://hdl.handle.net/1969.1/155555

► Integrally geared compressors (IGCs) comprise of single stage impellers installed on the ends of pinion shafts, all driven by a main bull gear (BG) and… (more)

▼ Integrally geared compressors (IGCs) comprise of single stage impellers installed on the ends of pinion shafts, all driven by a main bull gear (BG) and shaft system. When compared to single shaft multistage centrifugal compressors, the benefits of IGCs include better thermal efficiency, reduced footprint and simple foundation, dispensing with a high speed coupling, as well as better access for maintenance and overhauls. In IGCs the compression of the process gas induces axial loads on the pinion shafts that are transmitted via thrust collars (TCs) to the main drive shaft and balanced by a single thrust bearing. The TCs, located on either side of pinion gears, slightly overlap with the BG outer diameter to form lentil-shaped lubricant-wetted regions. A numerical model, based on classical thin film lubrication theory, predicts the force response of lubricated thrust collars for use in integrally geared compressors. The predictive model determines performance parameters such as lubricant flow rate, mechanical power loss, peak pressure, lubricant temperature rise, as well as rotordynamic stiffness and damping coefficients for a lubricated TC and bull gear pair. A Newton-Raphson based iterative procedure determines an equilibrium operating position for a given set of TC and BG operating conditions and geometry. Periodic, dynamic displacements from the equilibrium position renders complex dynamic stiffnesses (H = K+iωC), from which the fluid film force and moment stiffness and damping coefficients are determined. In a lubricated thrust collar and bull gear, a hydrodynamic pressure builds in the lower half of the lubricated zone and lubricant cavitation occurs in the upper half. The minimum film thickness and peak pressure in the lubricated zone shift location due to the difference in taper angles between the TC and BG surfaces. For a given applied load, a study on the differences in taper angle between the TC and BG surfaces reveals that current angular tolerances of ±0.1 produce TC/BG pairs with similar performance parameters (power loss, lubricant temperature rise, etc.) and dynamic force and moment stiffness and damping coefficients. Increasing the taper angles of both the TC and BG decreases mechanical power loss and lubricant temperature rise, but also decreases the fluid film axial stiffness and damping coefficients. In addition, static angular misalignments of the TC and BG about the horizontal (x) axis joining the BG and TC centers alters the shape and extent of the lubricant cavitation region. This change alters the load carrying capacity and mechanical power losses of the lubricated element. For the specific TC/BG pair investigated herein, there exists a maximum difference between the two taper angles for which the mechanical element can support an imposed thrust load. Increasing the speed of the BG (and proportionally the TC speed) increases the mechanical power loss and lubricant temperature rise and decreases the fluid film axial stiffness and damping coefficients. As with most fluid film bearings,… Advisors/Committee Members: San Andres, Luis (advisor), Childs, Dara (committee member), Strouboulis, Theofanis (committee member).

Subjects/Keywords: Integrally geared compressor; thrust collar; hydrodynamic lubrication

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cable, T. A. (2015). Analysis of Oil Lubricated Thrust Collars for Application in Integrally Geared Compressors. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/155555

Chicago Manual of Style (16^th Edition):

Cable, Travis Alexander. “Analysis of Oil Lubricated Thrust Collars for Application in Integrally Geared Compressors.” 2015. Masters Thesis, Texas A&M University. Accessed April 19, 2021. http://hdl.handle.net/1969.1/155555.

MLA Handbook (7^th Edition):

Cable, Travis Alexander. “Analysis of Oil Lubricated Thrust Collars for Application in Integrally Geared Compressors.” 2015. Web. 19 Apr 2021.

Vancouver:

Cable TA. Analysis of Oil Lubricated Thrust Collars for Application in Integrally Geared Compressors. [Internet] [Masters thesis]. Texas A&M University; 2015. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/1969.1/155555.

Council of Science Editors:

Cable TA. Analysis of Oil Lubricated Thrust Collars for Application in Integrally Geared Compressors. [Masters Thesis]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/155555

Penn State University

28. Yan, Yan. A Thermal Hydrodynamic Lubrication Model of Pivoted Plane-Pad Thrust Bearings .

Degree: 2011, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/11555

► This thesis develops an analytical model for the study of oil-lubricated plane-pad slider bearings with thermal effect. The effects of viscosity changes in the lubricant… (more)

▼ This thesis develops an analytical model for the study of oil-lubricated plane-pad slider bearings with thermal effect. The effects of viscosity changes in the lubricant with temperature are taken into account. The performance of the slider bearing system can be determined by reference to three dimensionless design parameters: length-to-width ratio (B/L), bearing load parameter (w_th) and the pivot location (X_C) of the bearing pad. The relationships between the performance variables and the design parameters are analyzed. The analysis suggests that centrally pivoted bearings can develop significant hydrodynamic lubrication load capacity when the bearing pad is sufficiently wide such as a length-to-width ratio (B/L) of 1 or less. The results show that the load capacity is reduced as the bearing pad narrows and the reduction becomes steep for bearings of B/L>1. At B/L=2, the reduction has become pronounced and the load capacity of the bearing is diminished. In addition, the analysis reveals that the lubricant film thickness in the bearing is relatively insensitive to the applied load when the bearing pad is sufficiently wide such as B/L<1. As the bearing pad narrows, however, the film thickness becomes increasingly sensitive and the sensitivity becomes large at B/L=2, making it very difficult to design centrally pivoted narrow bearings. The model is then used to study off-centrally pivoted bearings, and design charts are given for such bearings. The relationships between film thickness, friction coefficient, and pivot location are studied under various combinations of load parameters and length-to-width ratios. The results obtained from the model are compared to numerical results in the published literature. The validity and accuracy of the model may be evaluated by numerical analysis and by performing experiments on actual slider bearings in future work. Advisors/Committee Members: Liming Chang, Thesis Advisor/Co-Advisor, Liming Chang, Thesis Advisor/Co-Advisor.

Subjects/Keywords: thermal; hydrodynamic lubrication; pivoted slider bearing

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yan, Y. (2011). A Thermal Hydrodynamic Lubrication Model of Pivoted Plane-Pad Thrust Bearings . (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/11555

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yan, Yan. “A Thermal Hydrodynamic Lubrication Model of Pivoted Plane-Pad Thrust Bearings .” 2011. Thesis, Penn State University. Accessed April 19, 2021. https://submit-etda.libraries.psu.edu/catalog/11555.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yan, Yan. “A Thermal Hydrodynamic Lubrication Model of Pivoted Plane-Pad Thrust Bearings .” 2011. Web. 19 Apr 2021.

Vancouver:

Yan Y. A Thermal Hydrodynamic Lubrication Model of Pivoted Plane-Pad Thrust Bearings . [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Apr 19]. Available from: https://submit-etda.libraries.psu.edu/catalog/11555.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yan Y. A Thermal Hydrodynamic Lubrication Model of Pivoted Plane-Pad Thrust Bearings . [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/11555

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas Tech University

29. -0262-1751. The Impact of viscosity on two-phase gas-liquid slug flow hydrodynamics.

Degree: MSin Petroleum Engineering, Petroleum Engineering, 2018, Texas Tech University

URL: http://hdl.handle.net/2346/82070

► The impact of high viscosity on multiphase slug flow hydrodynamic closure relationship is examined experimentally in a horizontal pipe. The obvious differences observed between existing… (more)

Subjects/Keywords: hydrodynamic; flow pattern; high viscosity; multiphase flow

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

-0262-1751. (2018). The Impact of viscosity on two-phase gas-liquid slug flow hydrodynamics. (Masters Thesis). Texas Tech University. Retrieved from http://hdl.handle.net/2346/82070

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-0262-1751. “The Impact of viscosity on two-phase gas-liquid slug flow hydrodynamics.” 2018. Masters Thesis, Texas Tech University. Accessed April 19, 2021. http://hdl.handle.net/2346/82070.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-0262-1751. “The Impact of viscosity on two-phase gas-liquid slug flow hydrodynamics.” 2018. Web. 19 Apr 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-0262-1751. The Impact of viscosity on two-phase gas-liquid slug flow hydrodynamics. [Internet] [Masters thesis]. Texas Tech University; 2018. [cited 2021 Apr 19]. Available from: http://hdl.handle.net/2346/82070.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-0262-1751. The Impact of viscosity on two-phase gas-liquid slug flow hydrodynamics. [Masters Thesis]. Texas Tech University; 2018. Available from: http://hdl.handle.net/2346/82070

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of KwaZulu-Natal

30. Singh, Nalendran. The hydrodynamic design and analysis of a liquid oxygen pump impeller for a rocket engine.

Degree: 2018, University of KwaZulu-Natal

URL: https://researchspace.ukzn.ac.za/handle/10413/17549

► The deployment of micro- and nanosatellites has greatly increased over the past few decades with advances in miniaturized electronics for communication, imaging and attitude control.… (more)

▼ The deployment of micro- and nanosatellites has greatly increased over the past few decades with advances in miniaturized electronics for communication, imaging and attitude control. The South African satellite industry is now also currently developing two microsatellites and nanosatellites for launch by foreign providers. The outsourcing of launch services to foreign providers is costly and can lead to unanticipated delays. In this context, the UKZN Aerospace Systems Research Group (ASReG), in conjunction with the Council for Scientific and Industrial Research (CSIR) has begun designing a modular and compact liquid propulsion engine (LOX/RP-1) named SAFFIRE (South AFrican First Integrated Rocket Engine). This dissertation details the design and analysis of the liquid oxygen pump that delivers the oxidiser to the SAFFIRE combustion chamber at high pressure, where the propellants are burnt and expelled, generating thrust. The pump is electrically powered as opposed to the conventional turbine-driven turbopump, to further simplify start-stop procedures and reduce the complexity of the engine. The pump’s operating conditions were determined by an engine performance analysis, with these results forming the initial conditions for the pump design process. The oxidiser pump is required to deliver a mass flow rate of 6.13 kg/s at a pressure of 62.8 bar. The pump was designed using conventional centrifugal pump design procedures, with special considerations taken due to the working temperature of liquid oxygen being -183°C. The final one-dimensional design for the impeller was developed using the commercial software PUMPAL™, which was provided by the CSIR. A 3D impeller geometry was developed by importing the one-dimensional design into AxCent™, where quasi-3D Multiple Stream Tube (MST) analysis and full 3D computational fluid dynamics (CFD) simulations were performed. The impeller design was refined multiple times until the parameters set by the engine performance analysis were met. The AxCent™ analyses determined that low-pressure zones occurred at the inlet of the pump impeller. Hence Star-CCM+™, which has a more robust computational solver and allows for a full transient, multiphase CFD to be performed, was employed to analyse any potential cavitation affects. The results from Star-CCM+™ and AxCent™ were compared and designs altered until a final design was realized that met the prescribed performance parameters. The final pump impeller has an outer diameter of 86 mm, delivering a mass flow rate of 6.13 kg/s at a pressure of 64.2 bar. The pump operates at an efficiency of 60.8% requiring a power input of 51.96 kW at a rotational speed of 26000 rpm. Advisors/Committee Members: Brooks, Michael John. (advisor), Smith, Graham Douglas James. (advisor), Snedden, Glen Campbell. (advisor).

Subjects/Keywords: Hydrodynamic.; Liquid oxygen.; Impeller.; Rocket engine.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Singh, N. (2018). The hydrodynamic design and analysis of a liquid oxygen pump impeller for a rocket engine. (Thesis). University of KwaZulu-Natal. Retrieved from https://researchspace.ukzn.ac.za/handle/10413/17549

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Singh, Nalendran. “The hydrodynamic design and analysis of a liquid oxygen pump impeller for a rocket engine.” 2018. Thesis, University of KwaZulu-Natal. Accessed April 19, 2021. https://researchspace.ukzn.ac.za/handle/10413/17549.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Singh, Nalendran. “The hydrodynamic design and analysis of a liquid oxygen pump impeller for a rocket engine.” 2018. Web. 19 Apr 2021.

Vancouver:

Singh N. The hydrodynamic design and analysis of a liquid oxygen pump impeller for a rocket engine. [Internet] [Thesis]. University of KwaZulu-Natal; 2018. [cited 2021 Apr 19]. Available from: https://researchspace.ukzn.ac.za/handle/10413/17549.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Singh N. The hydrodynamic design and analysis of a liquid oxygen pump impeller for a rocket engine. [Thesis]. University of KwaZulu-Natal; 2018. Available from: https://researchspace.ukzn.ac.za/handle/10413/17549

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations