수평축 및 수직축 운용 특성 분석을 위한 유동 유발 해석

Title
수평축 및 수직축 운용 특성 분석을 위한 유동 유발 해석
Alternative Title
Flow-driven simulations for anlyzing operating characteristics of horizontal and vertical axis tidal turbines
Author(s)
레 광투엔; 이광수; 고진환; 박훈철
Publication Year
2012-09-19
Abstract
Computational fluid dynamic(CFD) simulations and analytical methods based on blade element momentum theory are typically used in analyzing the performance of tidal turbines. Both are conducted with the tip speed ratio (TSR) of turbines fixed and have some gaps with an experimental condition. In order to lessen the gaps, we perform flow-driven simulations, where the rotation of a turbine initiated by a flow, in order to analyze the realistic operating characteristics. For horizontal axis turbines, the flow-driven simulations obtain power efficiencies close to results of CFD with TSR fixed. They also provide the amounts of the loads that specify TSRs and evoke counter-rotating as same as the experiments do. The similar trends are shown for vertical axis turbines except the fluctuation of TSR after its convergence.fixed and have some gaps with an experimental condition. In order to lessen the gaps, we perform flow-driven simulations, where the rotation of a turbine initiated by a flow, in order to analyze the realistic operating characteristics. For horizontal axis turbines, the flow-driven simulations obtain power efficiencies close to results of CFD with TSR fixed. They also provide the amounts of the loads that specify TSRs and evoke counter-rotating as same as the experiments do. The similar trends are shown for vertical axis turbines except the fluctuation of TSR after its convergence.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/27576
Bibliographic Citation
European Workshop on Renewable Energy Systems, pp.1 - 5, 2012
Publisher
Gazi Univ.
Type
Conference
Language
English
Publisher
Gazi Univ.
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