The effects of free-stream turbulence and angle of attack on the aerodynamics of a cylinder with rectangular 5:1 cross section
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- 作者：Claudio Mannini ; claudio.mannini@unifi.it ; Antonino Maria Marra ; Luca Pigolotti ; Gianni Bartoli
- 关键词：BARC ; Rectangular cylinder ; Wind tunnel tests ; Turbulent flow ; Angle of attack ; Impinging shear-layer instability
- 刊名：Journal of Wind Engineering and Industrial Aerodynamics
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：161
- 期：Complete
- 页码：42-58
- 全文大小：3492 K
- 卷排序：161
文摘
The aerodynamics of a benchmark rectangular 5:1 cylinder was studied in the wind tunnel. Pressure, force and wake measurements in smooth and various turbulent flows. Reynolds-number effects were observed, in particular for small angles of attack. Pressure data revealed the earlier reattachment of the shear layers in turbulent flow. Free-stream turbulence promotes the switch between vortex-shedding modes.