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A parametric study of energy extraction from vortex-induced vibrations
被引:6
作者:
Pare-Lambert, Olivier
[1
]
Olivier, Mathieu
[1
]
机构:
[1] Univ Laval, Lab Mecan Fluides Numer, Dept Genie Mecan, Quebec City, PQ G1V 0A6, Canada
关键词:
hydrokinetic turbine;
fluid-structure interaction;
computational fluid dynamics;
vortex-induced vibrations;
CIRCULAR-CYLINDER;
LOW-MASS;
FREQUENCY-RESPONSE;
CROSS-FLOW;
DYNAMICS;
D O I:
10.1139/tcsme-2017-0071
中图分类号:
TH [机械、仪表工业];
学科分类号:
0802 ;
摘要:
This paper presents a parametric investigation of an oscillating-cylinder turbine concept based on vortex-induced vibrations. The parametric space includes four parameters: the Reynolds number, the mass ratio, the dimensionless stiffness, and the dimensionless damping. The damping-stiffness space is explored for four different mass ratios at a fixed Reynolds number of 200. Also, the influence of the parameters on the amplitude of cylinder displacement and on the efficiency of power harnessing is discussed. Vortex-shedding patterns observed within the parametric space are investigated. The 2S, 2P, and C(2S) wake modes are observed and are related to turbine performance. Preliminary results show a maximum efficiency of 10.6%, which is obtained with low mass ratios.
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页码:359 / 369
页数:11
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