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Auto-pitch wing-in-ground effect oscillating foils for marine propulsion

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Abstract
An auto-pitch wing-in-ground effect oscillating foil propulsor (APWIGs) is numerically modelled by means of an unsteady Reynolds Averaged Navier-Stokes solver. Locomotion of the biplane configuration is characterized as actively heaving motion in counterphase and passively pitching motion based on hydro-elastic moment. A comprehensive computation of propulsive properties for APWIGs as a function of frequency ratio and advance coefficient is performed. A consistently high propulsive efficiency is produced by APWIGs using a frequency ratio within the range of 1.1 to 1.4. It was found that the operation of APWIGs has an independence of forward speed within current parametric space.
Item Type: | Conference Publication |
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Authors/Creators: | Wang, J and Liu, P and Chin, C and He, G |
Keywords: | hydro-elasticity, fluid-structure interaction, wing-inground effect, marine propulsion |
Journal or Publication Title: | Proceedings of the 30th International Ocean and Polar Engineering Conference |
Publisher: | International Society of Offshore and Polar Engineers |
Copyright Information: | Copyright 2020 International Society of Offshore and Polar Engineers (ISOPE) |
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