Flapping foil propulsors may increase the propulsive efficiency of large shipping vessels. This paper presents the design of a notional propulsor for an inland waterway vessel. Calculations for the trochoidal propulsor are performed using a lumped, two-dimensional model, which includes the influence of the free vortex wake, as well as approximations to account for three-dimensional effects. The numerical model is used to optimize the foil pitch function in order to achieve the highest efficiency for given geometric and operational parameters. Foil-to-foil interactions are studied for multiple-foil propulsors to determine effects of blade number on hydrodynamic efficiency. Considerations of packaging options for a trochoidal propulsor are explored. The results presented herein can also be applied to large- and mid-sized ships, such as international shipping vessels, fishing vessels, cruise liners, and military ships.
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ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
June 8–13, 2014
San Francisco, California, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4551-6
PROCEEDINGS PAPER
Design and Analysis of Trochoidal Propulsors Using Nonlinear Programming Optimization Techniques
Bernard T. Roesler,
Bernard T. Roesler
Dartmouth College, Hanover, NH
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Manaure Francsiquez,
Manaure Francsiquez
Dartmouth College, Hanover, NH
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Brenden P. Epps
Brenden P. Epps
Dartmouth College, Hanover, NH
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Bernard T. Roesler
Dartmouth College, Hanover, NH
Manaure Francsiquez
Dartmouth College, Hanover, NH
Brenden P. Epps
Dartmouth College, Hanover, NH
Paper No:
OMAE2014-24093, V08BT06A032; 15 pages
Published Online:
October 1, 2014
Citation
Roesler, BT, Francsiquez, M, & Epps, BP. "Design and Analysis of Trochoidal Propulsors Using Nonlinear Programming Optimization Techniques." Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. Volume 8B: Ocean Engineering. San Francisco, California, USA. June 8–13, 2014. V08BT06A032. ASME. https://doi.org/10.1115/OMAE2014-24093
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