Power extraction performance of three types of flapping hydrofoils at a Reynolds number of 1.7E6 SCIE SCOPUS

Cited 10 time in WEB OF SCIENCE Cited 11 time in Scopus
Title
Power extraction performance of three types of flapping hydrofoils at a Reynolds number of 1.7E6
Author(s)
Sitorus, Patar Ebenezer; Ko, Jin Hwan
Alternative Author(s)
Patar Eben
Publication Year
2019-03
Abstract
This work focuses on the hydrodynamic performance analyses of three different types of flapping hydrofoils, in this case the pitch-heave (PH), left-swing (LS), and right-swing (RS) types, in their power extraction regimes via two dimensional CFD simulations. The power extraction performance is presented in an isocontour parametric map and is investigated from a comparison of the kinematics parameters and the development of unsteady vortices among the three types. It is found from the parametric analysis and comparison that the LS-type of flapping hydrofoil outperforms the PH and RS-types due to relatively high forces as well as the good synchronization of the forces and moment with the translational velocity and pitch angular rate, respectively upon the different aspects of the vortex development. Consequently, the power extraction performance improves from the LS to the PH and then to the RS-types. It is also recognized from another isocontour parametric map that the maximum power extraction efficiency is achieved at a similar maximum effective angle of attack, at the maximum effective angle of attack rate, and at the maximum pitch angle rate for the LS and RS types, while the range of the maximum effective angle of attack rate is lower in the PH-type hydrofoil. (C) 2018 Elsevier Ltd. All rights reserved.
ISSN
0960-1481
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/38867
DOI
10.1016/j.renene.2018.07.116
Bibliographic Citation
RENEWABLE ENERGY, v.132, pp.106 - 118, 2019
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Flapping-type-turbine; Pitch-heave; Left-swing; Right-swing; CFD
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
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