On the aerodynamic flow around a cyclist model at the hoods position

Jiun Jih Miau, Shang Ru Li, Zong Xiu Tsai, Mai Van Phung, San Yi Lin

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)

摘要

Abstract: Aerodynamic flow around an 1/5 scale cyclist model was studied experimentally and numerically. First, measurements of drag force were performed for the model in a low-speed wind tunnel at Reynolds numbers from 5.5 × 10 4 to 1.8 × 10 5. Meanwhile, numerical computation using a large eddy simulation method was performed at three Reynolds numbers of 1.1 × 10 4, 6.5 × 10 4 and 1.5 × 10 5 to obtain the drag coefficients for comparison. Second, flow visualization was made in a water channel and the wind tunnel mentioned to examine the three-dimensional flow separation pattern on the model surface, which could also be realized from the numerical results. Finally, a wake flow survey based on the hot-wire measurements in the wind tunnel showed that in the near-wake region, the flow was featured with the formation of multiple streamwise vortices. The numerical results further indicated that these vortices were evolved from the separated flows occurred on the model surface. Graphic Abstract: [Figure not available: see fulltext.].

原文English
頁(從 - 到)35-47
頁數13
期刊Journal of Visualization
23
發行號1
DOIs
出版狀態Published - 2020 2月 1

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 電氣與電子工程

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