Experimental and numerical study of a flapping tidal stream

Title
Experimental and numerical study of a flapping tidal stream
Author(s)
김지훈; Tuyen Quang Le; 고진환; Patar Eben; Indra Hartarto Tambunan; 강태삼
Publication Year
2017-11-20
Abstract
The tidal stream turbine is one of the systems that extract kinetic energy from tidal stream, and there are several types of the tidal stream turbine depending on its operating motion. In this research, we conduct experimental and consecutive numerical analyses of a flapping tidal stream generator with a dual configuration flappers. An experimental analysis of a smallscale prototype is conducted in a towing tank, and a numerical analysis is conducted using two-dimensional computational fluid dynamics simulations with an in-house code. Through an experimental analysis conducted while varying these factors, a high applied load and a high input arm angle were found to be advantageous. In consecutive numerical investigations with the kinematics selected from the experiments, it was found that a rear-swing flapper contributes to the total amount of power more than a front-swing flapper with a distance of two times the chord length and with a 90-degree phase difference between the two.ve numerical analyses of a flapping tidal stream generator with a dual configuration flappers. An experimental analysis of a smallscale prototype is conducted in a towing tank, and a numerical analysis is conducted using two-dimensional computational fluid dynamics simulations with an in-house code. Through an experimental analysis conducted while varying these factors, a high applied load and a high input arm angle were found to be advantageous. In consecutive numerical investigations with the kinematics selected from the experiments, it was found that a rear-swing flapper contributes to the total amount of power more than a front-swing flapper with a distance of two times the chord length and with a 90-degree phase difference between the two.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23566
Bibliographic Citation
The 70th Annual Meeting of the American Physical Society Division of Fluid Dynamics, pp.1, 2017
Publisher
American Physical Society
Type
Conference
Language
English
Publisher
American Physical Society
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