可再生能源2011，Vol.29Issue(4)：110-115,6.
竖轴水轮机空化对捕获功率的影响研究
Numerical study of the cavitation on the power capture efficiency of a vertical axis turbine
康海贵 1崔振磊1
作者信息
- 1. 大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024
- 折叠
摘要
Abstract
Vertical-axis tidal turbine as one kind of energy conversion systems was extensively tested and studied. Sliding mesh model,multiphase flow model and user-defined function of CFD was utilized, through the solution of moment equation,continuity equation and bubble transport equation under the entire wet flow of cavitation ignored and cavitating flow of cavitation considered were simulated respectively. The results showed that great differences of the flow field near the turbine upstream surface. Cavitation not only caused the bubbles around the turbine blades,but also disturbed the flow field around the turbine blades. Cavitation reduced the force on the principal axis and power efficiency Cp The peak of power efficiency was 0.23 when the tip speed ratio λ=2.75 ,and decreased by 25% compared with the wet flow.关键词
数值模拟/竖轴水轮机/空化/滑移网格/UDFKey words
numerical simulation/vertical-axis turbine/cavitation/sliding mesh/UDF分类
能源科技引用本文复制引用
康海贵,崔振磊..竖轴水轮机空化对捕获功率的影响研究[J].可再生能源,2011,29(4):110-115,6.
