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You searched for subject:(composite propellers). Showing records 1 – 3 of 3 total matches.

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Delft University of Technology

1. Maljaars, P.J. Hydro-elastic analysis of flexible marine propellers.

Degree: 2019, Delft University of Technology

Higher efficiencies, higher cavitation inception speeds and reduced acoustic signature are claimed benefits of flexible composite propellers. Analysing the hydrodynamic performance of these flexible propellers, implies that a coupled fluid-structure interaction (FSI) computation has to be performed. An FSI coupling can be monolithic, which means the equations for the fluid and structural sub-problem are merged into one set of equations and solved simultaneously. Another approach is to apply a partitioned coupling, in which the existing fluid and structural sub-problem are sequentially solved. Then, coupling iterations are performed to converge to the monolithic solution. When coupling iterations are omitted, the approach becomes a so-called loose coupling. Due to the relatively high fluid added mass, flexible propeller computations require a strong coupling including coupling iterations. Coupling iterations make these kind of computations CPU intensive and therefore it is of importance to solve the structural and fluid problem efficiently. Advisors/Committee Members: Kaminski, M.L., van Terwisga, T.J.C., Delft University of Technology.

Subjects/Keywords: flexible propellers; composite propellers; hydro-elasticity; fluid-structure interaction

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

APA (6th Edition):

Maljaars, P. J. (2019). Hydro-elastic analysis of flexible marine propellers. (Doctoral Dissertation). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:NBN:nl:ui:24-uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; 19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:isbn:978-94-6375-233-6 ; 10.4233/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:NBN:nl:ui:24-uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; http://resolver.tudelft.nl/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6

Chicago Manual of Style (16th Edition):

Maljaars, P J. “Hydro-elastic analysis of flexible marine propellers.” 2019. Doctoral Dissertation, Delft University of Technology. Accessed March 20, 2019. http://resolver.tudelft.nl/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:NBN:nl:ui:24-uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; 19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:isbn:978-94-6375-233-6 ; 10.4233/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:NBN:nl:ui:24-uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; http://resolver.tudelft.nl/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6.

MLA Handbook (7th Edition):

Maljaars, P J. “Hydro-elastic analysis of flexible marine propellers.” 2019. Web. 20 Mar 2019.

Vancouver:

Maljaars PJ. Hydro-elastic analysis of flexible marine propellers. [Internet] [Doctoral dissertation]. Delft University of Technology; 2019. [cited 2019 Mar 20]. Available from: http://resolver.tudelft.nl/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:NBN:nl:ui:24-uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; 19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:isbn:978-94-6375-233-6 ; 10.4233/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:NBN:nl:ui:24-uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; http://resolver.tudelft.nl/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6.

Council of Science Editors:

Maljaars PJ. Hydro-elastic analysis of flexible marine propellers. [Doctoral Dissertation]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:NBN:nl:ui:24-uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; 19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:isbn:978-94-6375-233-6 ; 10.4233/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; urn:NBN:nl:ui:24-uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6 ; http://resolver.tudelft.nl/uuid:19c9610b-9a72-42a6-8340-2ba01ec78cc6


Indian Institute of Science

2. Karthigan, G. Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins.

Degree: 2012, Indian Institute of Science

Ionic polymer metal composites (IPMC) are a new class of smart materials that have attractive characteristics such as muscle like softness, low voltage and power consumption, and good performance in aqueous environments. Therefore, there is a significant motivation for research on design and development of IPMC based biomimetic propulsion systems for underwater vehicles. In aerospace, underwater vehicles finds application for forensic studies of spaceship wrecks, missile fragments and any airplane accidents in sea and ocean terrains. Such vehicles can also survey moons and planets that house water oceans. Among biomimetic swimming systems, fish inspired swimming has gained interest since fish like swimming provides high maneuverability, high cruising speed, noiseless propulsion and efficient stabilization compared to conventional propulsion systems. In this work, the paired pectoral fin based oscillatory propulsion using IPMC for aquatic propulsor applications is studied. Dynamic characteristics of IPMC fin are analyzed using numerical simulations and optimization is used to improve the fin design. A complex hydrodynamic function is used to describe the behavior of an active IPMC fin actuator in water. The structural model of the IPMC fin is obtained by modifying the classical dynamic equation for a slender beam to account for the electromechanical dynamics of the IPMC beam in water. A quasi-steady blade element model that accounts for unsteady phenomena such as added mass effects, dynamic stall, and the cumulative Wagner effect is used to estimate the hydrodynamic performance of the flapping fin. It is shown that the use of optimization methods can lead to significant improvement in performance of the IPMC fin. Further, three fish species with high performance flapping pectoral fin locomotion are chosen and performance analysis of each fin design is conducted to discover the better configurations for engineering applications. Dynamic characteristics of IPMC actuated flapping fins having the same size as the actual fins of three different fish species, Gomphosus varius, Scarus frenatus and Sthethojulis trilineata, are also analyzed. Finally, a comparative study is performed to analyze the performance of the three different biomimetic IPMC flapping pectoral fins. Advisors/Committee Members: Ganguli, Ranjan.

Subjects/Keywords: Polymer Metal Composite Flapping Fins; Gliders; Underwater Propulsion; Submarines - Propellers; Ionic Polymer Metal Composite (IPMC); Biomimetic Propulsion; Underwater Vehicles - Propulsion; Submersibles; Fish Inspired Biomimetic Flapping Fins; Labriform Propulsion; Aeronautics

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

APA (6th Edition):

Karthigan, G. (2012). Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins. (Thesis). Indian Institute of Science. Retrieved from http://hdl.handle.net/2005/2282

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

Chicago Manual of Style (16th Edition):

Karthigan, G. “Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins.” 2012. Thesis, Indian Institute of Science. Accessed March 20, 2019. http://hdl.handle.net/2005/2282.

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

MLA Handbook (7th Edition):

Karthigan, G. “Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins.” 2012. Web. 20 Mar 2019.

Vancouver:

Karthigan G. Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins. [Internet] [Thesis]. Indian Institute of Science; 2012. [cited 2019 Mar 20]. Available from: http://hdl.handle.net/2005/2282.

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

Council of Science Editors:

Karthigan G. Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins. [Thesis]. Indian Institute of Science; 2012. Available from: http://hdl.handle.net/2005/2282

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


Indian Institute of Science

3. Karthigan, G. Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins.

Degree: 2012, Indian Institute of Science

Ionic polymer metal composites (IPMC) are a new class of smart materials that have attractive characteristics such as muscle like softness, low voltage and power consumption, and good performance in aqueous environments. Therefore, there is a significant motivation for research on design and development of IPMC based biomimetic propulsion systems for underwater vehicles. In aerospace, underwater vehicles finds application for forensic studies of spaceship wrecks, missile fragments and any airplane accidents in sea and ocean terrains. Such vehicles can also survey moons and planets that house water oceans. Among biomimetic swimming systems, fish inspired swimming has gained interest since fish like swimming provides high maneuverability, high cruising speed, noiseless propulsion and efficient stabilization compared to conventional propulsion systems. In this work, the paired pectoral fin based oscillatory propulsion using IPMC for aquatic propulsor applications is studied. Dynamic characteristics of IPMC fin are analyzed using numerical simulations and optimization is used to improve the fin design. A complex hydrodynamic function is used to describe the behavior of an active IPMC fin actuator in water. The structural model of the IPMC fin is obtained by modifying the classical dynamic equation for a slender beam to account for the electromechanical dynamics of the IPMC beam in water. A quasi-steady blade element model that accounts for unsteady phenomena such as added mass effects, dynamic stall, and the cumulative Wagner effect is used to estimate the hydrodynamic performance of the flapping fin. It is shown that the use of optimization methods can lead to significant improvement in performance of the IPMC fin. Further, three fish species with high performance flapping pectoral fin locomotion are chosen and performance analysis of each fin design is conducted to discover the better configurations for engineering applications. Dynamic characteristics of IPMC actuated flapping fins having the same size as the actual fins of three different fish species, Gomphosus varius, Scarus frenatus and Sthethojulis trilineata, are also analyzed. Finally, a comparative study is performed to analyze the performance of the three different biomimetic IPMC flapping pectoral fins. Advisors/Committee Members: Ganguli, Ranjan.

Subjects/Keywords: Polymer Metal Composite Flapping Fins; Gliders; Underwater Propulsion; Submarines - Propellers; Ionic Polymer Metal Composite (IPMC); Biomimetic Propulsion; Underwater Vehicles - Propulsion; Submersibles; Fish Inspired Biomimetic Flapping Fins; Labriform Propulsion; Aeronautics

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

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

APA (6th Edition):

Karthigan, G. (2012). Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins. (Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ernet.in/handle/2005/2282 ; http://etd.ncsi.iisc.ernet.in/abstracts/2937/G25125-Abs.pdf

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

Chicago Manual of Style (16th Edition):

Karthigan, G. “Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins.” 2012. Thesis, Indian Institute of Science. Accessed March 20, 2019. http://etd.iisc.ernet.in/handle/2005/2282 ; http://etd.ncsi.iisc.ernet.in/abstracts/2937/G25125-Abs.pdf.

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

MLA Handbook (7th Edition):

Karthigan, G. “Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins.” 2012. Web. 20 Mar 2019.

Vancouver:

Karthigan G. Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins. [Internet] [Thesis]. Indian Institute of Science; 2012. [cited 2019 Mar 20]. Available from: http://etd.iisc.ernet.in/handle/2005/2282 ; http://etd.ncsi.iisc.ernet.in/abstracts/2937/G25125-Abs.pdf.

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

Council of Science Editors:

Karthigan G. Modelling And Analysis Of Fish Inspired Ionic Polymer Metal Composite Flapping Fins. [Thesis]. Indian Institute of Science; 2012. Available from: http://etd.iisc.ernet.in/handle/2005/2282 ; http://etd.ncsi.iisc.ernet.in/abstracts/2937/G25125-Abs.pdf

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

.