Performance of vortex shedding from a circular cylinder with a slit

B. H. Peng, J. J. Miau, F. Bao, L. D. Weng, C. C. Chao, C. C. Hsu

研究成果: Conference contribution

摘要

Flow-field study was conducted concerning vortex shedding from a circular cylinder with a slit. Experiments were carried out in a water channel and a low-speed wind tunnel with emphasis on the impact of the slit width on the quality of the vortex shedding signal measured. It is found that among the cases studied, whose slit widths ranging from 0 to 0.3 d, where d denotes the diameter of the circular cylinder, an optimal range of slit width, 0.1-0.15 d, was identifed, in which not only the vortex shedding signals show the best quality, but also the relation of the Strouhal number against the Reynolds number appears to be the most linear. By spanwise correlation of hot-wire measurements in the wind tunnel, it is further noted that in this situation the vortex shedding flow structures appear to be almost perferctly two-dimensional in the near wake region. Moreover, it is worthwhile to mention that for the cases of the circular cylinders with slits, the signal quality of vortex shedding reamins well acceptable for the Reynolds number as low as 2.4×103. Thus, the rangeability of flow measurement is increased significantly.

原文English
主出版物標題15th International Flow Measurement Conference 2010, FLOMEKO 2010
頁面538-549
頁數12
出版狀態Published - 2010
事件15th International Flow Measurement Conference 2010, FLOMEKO 2010 - Taipei, Taiwan
持續時間: 2010 10月 132010 10月 15

出版系列

名字15th International Flow Measurement Conference 2010, FLOMEKO 2010
2

Other

Other15th International Flow Measurement Conference 2010, FLOMEKO 2010
國家/地區Taiwan
城市Taipei
期間10-10-1310-10-15

All Science Journal Classification (ASJC) codes

  • 流體流動和轉移過程

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