Wake structure of a single vertical axis wind turbine

详细信息    查看全文

• 作者：Antonio Posa ; ^{antonioposa_81@alice.it} ; ^{aposa@gwu.edu} ; Colin M. Parker ^{colinparker@gwu.edu} ; Megan C. Leftwich ^{mleftwich@gwu.edu} ; Elias Balaras ^{balaras@gwu.edu}
• 关键词：Vertical axis wind turbines ; Particle image velocimetry ; Large-eddy simulation
• 刊名：International Journal of Heat and Fluid Flow
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：61
• 期：part_PA
• 页码：75-84
• 全文大小：6299 K
• 卷排序：61

文摘

The wake structure of an isolated Vertical Axis Wind Turbine is studied by both Particle Imaging Velocimetry and Large Eddy Simulation. The wake structure is investigated for two values of tip speed ratio, TSR1=1.35 and TSR2=2.21. A displacement of the momentum deficit towards the windward side is verified in the wake. Higher turbulence and coherence is observed on the leeward side of the wake, due to the upwind stall of the blades. Coherence in the wake core, associated to the downwind stall, decays quickly downstream.