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

Jiun-Jih 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

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 十一月 2
事件19th International Conference on the Methods of Aerophysical Research, ICMAR 2018 - Akademgorodok, Novosibirsk, Russian Federation
持續時間: 2018 八月 132018 八月 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Russian Federation
城市Akademgorodok, Novosibirsk
期間18-08-1318-08-19

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • Physics and Astronomy(all)
  • Nature and Landscape Conservation

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  • 引用此

    Miau, J-J., Tsai, J. H., Hsu, X. Y., Tsai, Z. X., Lai, Y. H., Ciou, Y. S., Shen, P. T., Chuang, P. C., Lebiga, V., Isaev, S., Mironov, D., Pak, A., & Zinovyev, V. (2018). On critical transition of flow over a circular cylinder roughened by textile materials. 於 V. Fomin (編輯), 19th International Conference on the Methods of Aerophysical Research, ICMAR 2018 [020004] (AIP Conference Proceedings; 卷 2027). American Institute of Physics Inc.. https://doi.org/10.1063/1.5065082