On critical transition of flow over a circular cylinder roughened by textile materials

J. J. Miau, J. H. Tsai, X. Y. Hsu, Z. X. Tsai, Y. H. Lai, Y. S. Ciou, P. T. Shen, P. C. Chuang, V. Lebiga, S. Isaev, D. Mironov, A. Pak, V. Zinovyev

研究成果: Conference contribution

4 引文 斯高帕斯(Scopus)

摘要

Experiments were made in a low-speed wind tunnel to study the effect of textile roughness on the critical transition phenomenon of flows over a 2D circular cylinder and a finite circular cylinder whose aspect ratio is 4, respectively. First, a comparison of the results of the two cylinder models without textile material fitted shows that the critical transition phenomenon takes place at higher Reynolds numbers for flow over the finite circular cylinder. Second, concerning the results obtained with the three kinds of textile materials fitted on the two cylinders, it is consistently shown that the critical transition Reynolds numbers for flows over the finite circular cylinder are lower than those for flows over the 2D circular cylinder. This finding is opposite to that of the smooth models. Moreover, discussion on the instantaneous flow characteristics in the critical transition range can be made with the plots showing the distributions of the instantaneous lift and drag forces measured.

原文English
主出版物標題19th International Conference on the Methods of Aerophysical Research, ICMAR 2018
編輯Vasily Fomin
發行者American Institute of Physics Inc.
ISBN(電子)9780735417472
DOIs
出版狀態Published - 2018 11月 2
事件19th International Conference on the Methods of Aerophysical Research, ICMAR 2018 - Akademgorodok, Novosibirsk, Russian Federation
持續時間: 2018 8月 132018 8月 19

出版系列

名字AIP Conference Proceedings
2027
ISSN(列印)0094-243X
ISSN(電子)1551-7616

Other

Other19th International Conference on the Methods of Aerophysical Research, ICMAR 2018
國家/地區Russian Federation
城市Akademgorodok, Novosibirsk
期間18-08-1318-08-19

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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