Computational Investigation of Multiple Oscillating Hydrofoils and its Effect on Thrust Augmentation

Uma Krige, Kim Boon Lua, Wei Hua Ho*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Previous investigations of flapping hydrofoils for the purpose of thrust production have been limited to one or two in tandem. Tandem foils were found to have superior performance because the performance of the aft foil was augmented by the vortices shed from the fore foil. It is however not clear if increasing the number of foils will continue to have increased performance or if there exist an optimal number after which the overall performance either stagnates or reduces. A 2D computational study was conducted to investigate the effect of increasing the number of hydrofoils to four at a Reynolds number of 8000 flapping in-phase and out-of-phase. Optimal and sub-optimal conditions found previously with tandem hydrofoils were found also be applicable to three and four hydrofoils.

Original languageEnglish
Title of host publication12th South African Conference on Computational and Applied Mechanics, SACAM 2020
EditorsSebastian Skatulla
PublisherEDP Sciences
ISBN (Electronic)9781713840770
DOIs
StatePublished - 2020
Event12th South African Conference on Computational and Applied Mechanics, SACAM 2020 - Cape Town, South Africa
Duration: 29 Nov 20211 Dec 2021

Publication series

Name12th South African Conference on Computational and Applied Mechanics, SACAM 2020

Conference

Conference12th South African Conference on Computational and Applied Mechanics, SACAM 2020
Country/TerritorySouth Africa
CityCape Town
Period29/11/211/12/21

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