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You searched for +publisher:"University of Twente" +contributor:("van der Weide, Edwin Theodorus Antonius"). Showing records 1 – 3 of 3 total matches.

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1. Jongsma, S.H. On a method for simulation-based wind turbine blade design.

Degree: Faculty of Engineering Technology, 2014, University of Twente

Wind turbines are an important means for the production of renewable energy. Wind conditions vary from one site to another and the design of a horizontal axis wind turbine depends on these local wind conditions. One of the important aspects of the design of a wind turbine concerns the aerodynamic shape of the rotor blades. The research presented in this thesis focusses on the development of a computational method that can be used for solving aerodynamic shape optimization problems. A gradient-based optimization method is employed for this purpose. For a feasible optimization method, the gradients must be computed efficiently. This goal is achieved using the discrete adjoint equation method, which is independent of the number of design variables. Robust and accurate evaluation of partial derivatives is achieved by means of the dual number method. The flow domain is discretized using composite overset grids and the compressible Euler equations are used to model the flow. The optimization method has been used for the optimization of a swept wing for both sub-critical and transonic flow conditions. The results show that the method is robust and can be used to efficiently solve aerodynamic shape optimization problems. Moreover, using the method for solving aerodynamic shape optimization problems involving a wind turbine rotor blade has been discussed, regarding possible objective functions for the present optimization framework. Some issues arose solving the optimization problem for a wind turbine blade. These issues have been identified and suggestions are put forward for resolving them. Advisors/Committee Members: Hoeijmakers, Hendrik Willem Marie, van der Weide, Edwin Theodorus Antonius.

Subjects/Keywords: METIS-304179; IR-91377

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

APA (6th Edition):

Jongsma, S. H. (2014). On a method for simulation-based wind turbine blade design. (Doctoral Dissertation). University of Twente. Retrieved from https://research.utwente.nl/en/publications/on-a-method-for-simulationbased-wind-turbine-blade-design(118b42d1-ca7e-4cbb-b8ff-b0d770f6039e).html ; urn:nbn:nl:ui:28-91377 ; 118b42d1-ca7e-4cbb-b8ff-b0d770f6039e ; 10.3990/1.9789036536981 ; urn:isbn:978-90-365-3698-1 ; urn:nbn:nl:ui:28-91377 ; https://research.utwente.nl/en/publications/on-a-method-for-simulationbased-wind-turbine-blade-design(118b42d1-ca7e-4cbb-b8ff-b0d770f6039e).html

Chicago Manual of Style (16th Edition):

Jongsma, S H. “On a method for simulation-based wind turbine blade design.” 2014. Doctoral Dissertation, University of Twente. Accessed August 11, 2020. https://research.utwente.nl/en/publications/on-a-method-for-simulationbased-wind-turbine-blade-design(118b42d1-ca7e-4cbb-b8ff-b0d770f6039e).html ; urn:nbn:nl:ui:28-91377 ; 118b42d1-ca7e-4cbb-b8ff-b0d770f6039e ; 10.3990/1.9789036536981 ; urn:isbn:978-90-365-3698-1 ; urn:nbn:nl:ui:28-91377 ; https://research.utwente.nl/en/publications/on-a-method-for-simulationbased-wind-turbine-blade-design(118b42d1-ca7e-4cbb-b8ff-b0d770f6039e).html.

MLA Handbook (7th Edition):

Jongsma, S H. “On a method for simulation-based wind turbine blade design.” 2014. Web. 11 Aug 2020.

Vancouver:

Jongsma SH. On a method for simulation-based wind turbine blade design. [Internet] [Doctoral dissertation]. University of Twente; 2014. [cited 2020 Aug 11]. Available from: https://research.utwente.nl/en/publications/on-a-method-for-simulationbased-wind-turbine-blade-design(118b42d1-ca7e-4cbb-b8ff-b0d770f6039e).html ; urn:nbn:nl:ui:28-91377 ; 118b42d1-ca7e-4cbb-b8ff-b0d770f6039e ; 10.3990/1.9789036536981 ; urn:isbn:978-90-365-3698-1 ; urn:nbn:nl:ui:28-91377 ; https://research.utwente.nl/en/publications/on-a-method-for-simulationbased-wind-turbine-blade-design(118b42d1-ca7e-4cbb-b8ff-b0d770f6039e).html.

Council of Science Editors:

Jongsma SH. On a method for simulation-based wind turbine blade design. [Doctoral Dissertation]. University of Twente; 2014. Available from: https://research.utwente.nl/en/publications/on-a-method-for-simulationbased-wind-turbine-blade-design(118b42d1-ca7e-4cbb-b8ff-b0d770f6039e).html ; urn:nbn:nl:ui:28-91377 ; 118b42d1-ca7e-4cbb-b8ff-b0d770f6039e ; 10.3990/1.9789036536981 ; urn:isbn:978-90-365-3698-1 ; urn:nbn:nl:ui:28-91377 ; https://research.utwente.nl/en/publications/on-a-method-for-simulationbased-wind-turbine-blade-design(118b42d1-ca7e-4cbb-b8ff-b0d770f6039e).html

2. Hospers, Jacco. Eulerian method for super-cooled large-droplet ice-accretion on aircraft wings.

Degree: Faculty of Engineering Technology, 2013, University of Twente

Many research has been done to provide scientists and aviation engineers with tools to predict ice accretions on in ight aircraft. The ice accretion problem is often sudden, its eects can be dramatic, leading to aircraft accidents with possible loss of lives. Until now this eld has been relatively steady. It has proven to be fairly easy to model ice accretions for clouds with droplets of relatively small droplet diameter (< 50 μm). However, a recent trend is to investigate supercooled large droplets, with diameters ranging from 50 μm through 1000 μm or larger. These large droplets have been found to be more prominent in nature than previously thought. Ice accretions caused by these droplets have been identied as the likely cause for several aviation incidents during the last decade. Ice accretion by sld are far more dicult to predict than those by smaller droplets. Development of ice accretion models for sld has found renewed focus and was the central research theme in the European Commission FP7 extice project. Much of the research in this thesis has its origins, or has been inspired by, this project. A new sld ice accretion method has been developed, incorporating: droplet size distributions, droplet deformation, droplet splashing, and droplet rebound. This method has been validated against experimental catching eciencies and experimental ice accretions shapes. Furthermore, this method has been extended from a Lagrangian method for two-dimensional ow to an Eulerian method for three-dimensional ow. Validation results show an accuracy of droplet catching eciencies within 10%. The ice accretion shapes are more dicult to accurately predict, but without a boundary layer lm ow model the ice accretion thickness can also be predicted within approximately 10% accuracy. Advisors/Committee Members: Hoeijmakers, Hendrik Willem Marie, van der Weide, Edwin Theodorus Antonius.

Subjects/Keywords: METIS-301250; IR-87847

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

APA (6th Edition):

Hospers, J. (2013). Eulerian method for super-cooled large-droplet ice-accretion on aircraft wings. (Doctoral Dissertation). University of Twente. Retrieved from https://research.utwente.nl/en/publications/eulerian-method-for-supercooled-largedroplet-iceaccretion-on-aircraft-wings(af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4).html ; urn:nbn:nl:ui:28-87847 ; af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4 ; 10.3990/1.9789036536172 ; urn:isbn:978-90-365-3617-2 ; urn:nbn:nl:ui:28-87847 ; https://research.utwente.nl/en/publications/eulerian-method-for-supercooled-largedroplet-iceaccretion-on-aircraft-wings(af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4).html

Chicago Manual of Style (16th Edition):

Hospers, Jacco. “Eulerian method for super-cooled large-droplet ice-accretion on aircraft wings.” 2013. Doctoral Dissertation, University of Twente. Accessed August 11, 2020. https://research.utwente.nl/en/publications/eulerian-method-for-supercooled-largedroplet-iceaccretion-on-aircraft-wings(af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4).html ; urn:nbn:nl:ui:28-87847 ; af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4 ; 10.3990/1.9789036536172 ; urn:isbn:978-90-365-3617-2 ; urn:nbn:nl:ui:28-87847 ; https://research.utwente.nl/en/publications/eulerian-method-for-supercooled-largedroplet-iceaccretion-on-aircraft-wings(af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4).html.

MLA Handbook (7th Edition):

Hospers, Jacco. “Eulerian method for super-cooled large-droplet ice-accretion on aircraft wings.” 2013. Web. 11 Aug 2020.

Vancouver:

Hospers J. Eulerian method for super-cooled large-droplet ice-accretion on aircraft wings. [Internet] [Doctoral dissertation]. University of Twente; 2013. [cited 2020 Aug 11]. Available from: https://research.utwente.nl/en/publications/eulerian-method-for-supercooled-largedroplet-iceaccretion-on-aircraft-wings(af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4).html ; urn:nbn:nl:ui:28-87847 ; af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4 ; 10.3990/1.9789036536172 ; urn:isbn:978-90-365-3617-2 ; urn:nbn:nl:ui:28-87847 ; https://research.utwente.nl/en/publications/eulerian-method-for-supercooled-largedroplet-iceaccretion-on-aircraft-wings(af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4).html.

Council of Science Editors:

Hospers J. Eulerian method for super-cooled large-droplet ice-accretion on aircraft wings. [Doctoral Dissertation]. University of Twente; 2013. Available from: https://research.utwente.nl/en/publications/eulerian-method-for-supercooled-largedroplet-iceaccretion-on-aircraft-wings(af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4).html ; urn:nbn:nl:ui:28-87847 ; af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4 ; 10.3990/1.9789036536172 ; urn:isbn:978-90-365-3617-2 ; urn:nbn:nl:ui:28-87847 ; https://research.utwente.nl/en/publications/eulerian-method-for-supercooled-largedroplet-iceaccretion-on-aircraft-wings(af1583e0-0f28-4bdd-8c5f-5a3dc269f1a4).html

3. de Vries, Hein. On synthetic jet actuation for aerodynamic load control.

Degree: Faculty of Engineering Technology, 2013, University of Twente

A major goal for the wind energy industry is the reduction of the cost of energy. This drives the design towards increasingly larger wind turbines. The technology of smart rotor control is expected to allow wind turbines to increase even further in size due to its potential to change the local aerodynamic characteristics of the blades such that fatigue inducing variations in blade loads are alleviated. In the present research, synthetic jets have been investigated as a potential option for smart rotor control. Synthetic jets are generated by repeated ingestion and subsequent ejection of air, into and out of a cavity below the surface of the blade, respectively, through holes or slits in the surface of this blade. A multi-purpose computational method has been developed that solves the unsteady Reynolds-averaged Navier-Stokes equations for unsteady compressible viscous flow, together with the equation(s) of an eddy-viscosity turbulence model. Time-dependent inflow/outflow boundary conditions have been included that enable the simulation of flows with synthetic jets. A parameter study has been performed of synthetic jet actuation through long spanwise slits close to the trailing edge of a non-rotating airfoil. For low actuation frequencies, computational results have been compared to to experimentally obtained surface pressure measurements. The computational method predicts well the effect of low-frequency actuation, but the effect is overpredicted in comparison with the experimental results, probably due to three-dimensional flow effects that are not represented in the two-dimensional flow configuration considered in the numerical simulations. Only synthetic jet actuation at high actuation frequencies is a feasible option for smart rotor control. At these frequencies, vortices are generated that cause a displacement of the main flow along the airfoil. This displacement influences the direction of the flow at the trailing edge, i.e. the circulation around the airfoil, which is associated with a change of the lift and drag coefficients. A combination of the studied parameters has been found that yields a performance close to that needed for smart rotor control. However, the associated power consumption appears to be prohibitive. Further study is needed to find a less power intensive combination of the involved parameters. Advisors/Committee Members: Hoeijmakers, Hendrik Willem Marie, Hirschberg, Abraham, van der Weide, Edwin Theodorus Antonius.

Subjects/Keywords: METIS-296780; IR-86397

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

APA (6th Edition):

de Vries, H. (2013). On synthetic jet actuation for aerodynamic load control. (Doctoral Dissertation). University of Twente. Retrieved from https://research.utwente.nl/en/publications/on-synthetic-jet-actuation-for-aerodynamic-load-control(334b8268-9863-43a8-a158-7ec0b825e6e5).html ; urn:nbn:nl:ui:28-86397 ; 334b8268-9863-43a8-a158-7ec0b825e6e5 ; 10.3990/1.9789036500067 ; urn:isbn:978-90-365-0006-7 ; urn:nbn:nl:ui:28-86397 ; https://research.utwente.nl/en/publications/on-synthetic-jet-actuation-for-aerodynamic-load-control(334b8268-9863-43a8-a158-7ec0b825e6e5).html

Chicago Manual of Style (16th Edition):

de Vries, Hein. “On synthetic jet actuation for aerodynamic load control.” 2013. Doctoral Dissertation, University of Twente. Accessed August 11, 2020. https://research.utwente.nl/en/publications/on-synthetic-jet-actuation-for-aerodynamic-load-control(334b8268-9863-43a8-a158-7ec0b825e6e5).html ; urn:nbn:nl:ui:28-86397 ; 334b8268-9863-43a8-a158-7ec0b825e6e5 ; 10.3990/1.9789036500067 ; urn:isbn:978-90-365-0006-7 ; urn:nbn:nl:ui:28-86397 ; https://research.utwente.nl/en/publications/on-synthetic-jet-actuation-for-aerodynamic-load-control(334b8268-9863-43a8-a158-7ec0b825e6e5).html.

MLA Handbook (7th Edition):

de Vries, Hein. “On synthetic jet actuation for aerodynamic load control.” 2013. Web. 11 Aug 2020.

Vancouver:

de Vries H. On synthetic jet actuation for aerodynamic load control. [Internet] [Doctoral dissertation]. University of Twente; 2013. [cited 2020 Aug 11]. Available from: https://research.utwente.nl/en/publications/on-synthetic-jet-actuation-for-aerodynamic-load-control(334b8268-9863-43a8-a158-7ec0b825e6e5).html ; urn:nbn:nl:ui:28-86397 ; 334b8268-9863-43a8-a158-7ec0b825e6e5 ; 10.3990/1.9789036500067 ; urn:isbn:978-90-365-0006-7 ; urn:nbn:nl:ui:28-86397 ; https://research.utwente.nl/en/publications/on-synthetic-jet-actuation-for-aerodynamic-load-control(334b8268-9863-43a8-a158-7ec0b825e6e5).html.

Council of Science Editors:

de Vries H. On synthetic jet actuation for aerodynamic load control. [Doctoral Dissertation]. University of Twente; 2013. Available from: https://research.utwente.nl/en/publications/on-synthetic-jet-actuation-for-aerodynamic-load-control(334b8268-9863-43a8-a158-7ec0b825e6e5).html ; urn:nbn:nl:ui:28-86397 ; 334b8268-9863-43a8-a158-7ec0b825e6e5 ; 10.3990/1.9789036500067 ; urn:isbn:978-90-365-0006-7 ; urn:nbn:nl:ui:28-86397 ; https://research.utwente.nl/en/publications/on-synthetic-jet-actuation-for-aerodynamic-load-control(334b8268-9863-43a8-a158-7ec0b825e6e5).html

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