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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publication15th International Flow Measurement Conference 2010, FLOMEKO 2010
Pages538-549
Number of pages12
Publication statusPublished - 2010
Event15th International Flow Measurement Conference 2010, FLOMEKO 2010 - Taipei, Taiwan
Duration: 2010 Oct 132010 Oct 15

Publication series

Name15th International Flow Measurement Conference 2010, FLOMEKO 2010
Volume2

Other

Other15th International Flow Measurement Conference 2010, FLOMEKO 2010
CountryTaiwan
CityTaipei
Period10-10-1310-10-15

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

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  • Cite this

    Peng, B. H., Miau, J. J., Bao, F., Weng, L. D., Chao, C. C., & Hsu, C. C. (2010). Performance of vortex shedding from a circular cylinder with a slit. In 15th International Flow Measurement Conference 2010, FLOMEKO 2010 (pp. 538-549). (15th International Flow Measurement Conference 2010, FLOMEKO 2010; Vol. 2).