文献类型：期刊文献

英文题名：Flow control for high-solidity vertical axis wind turbine based on adaptive flap

作者：Hao, Wenxing[1];Bashir, Musa[2];Li, Chun[3];Sun, Chengda[1]

机构：[1]Shaoxing Univ, Sch Mech & Elect Engn, Shaoxing 312000, Peoples R China;[2]Liverpool John Moores Univ, Liverpool Logist Offshore & Marine Res Inst, Liverpool L3 3AF, Merseyside, England;[3]Univ Shanghai Sci & Technol, Sch Energy & Power Engn, Shanghai 200093, Peoples R China

年份：2021

卷号：249

外文期刊名：ENERGY CONVERSION AND MANAGEMENT

收录：SCI-EXPANDED(收录号：WOS:000708543100002)、、EI(收录号：20214211041685)、Scopus(收录号：2-s2.0-85117199460)、WOS

基金：The authors gratefully acknowledge the financial support from the Research Start-up Funds of Shaoxing University (Grant No. 20195018) , National Natural Science Foundation of China (Grant No. 51976131) , and Shanghai University Science and Technology Innovation Action Plan Local University Capacity Building Project (grand number: 19060502200).

语种：英文

外文关键词：Vertical axis wind turbine; Flow separation control; Adaptive flap; Computational fluid dynamics; Fluid-solid interaction

外文摘要：Adaptive flap as a new flow control technique with adaptability to the changing flow separation has recently attracted much attention. This study uses the adaptive flap to mitigate the flow separation of a vertical axis wind turbine with a high solidity of 0.75 and investigate its performance and flow control mechanism by considering different flap lengths and locations. The fluid flow is simulated using computational fluid dynamics with the shear-stress transport k-omega model, and the flap motion is calculated based on the fluid-solid interaction methodology. The results show that the flap can be adaptively raised by the backflow caused by flow separation and used to block the backflow. The blocking of the backflow alleviates the flow separation problem and increases the blades' aerodynamic torque. However, the long flap causes a negative effect due to its inability to retract timely when the flow tends to the attached state at high tip speed ratio scenario. It is observed that the short flap can avoid this problem when it is located far from the blade leading edge. Also, the short flap located closer to the blade leading edge performs better at low tip speed ratios, even though the performance is observed to be weakened by the trailing edge vortices suppressing the flap from deployment. This study provides a technical approach and theoretical basis for better alleviating the flow separation problems in vertical axis wind turbine.