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Characteristics of Vortex Shedding behind a Circular Cylinder with Serrated Fins
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 Title & Authors
Characteristics of Vortex Shedding behind a Circular Cylinder with Serrated Fins
Bu, Jeong-Suk; Ryu, Byeong-Nam; Kim, Gyeong-Cheon;
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 Abstract
An experimental study is performed to investigate the characteristics of vortex shedding behind a circular cylinder with serrated fins using hot-wire anemometer. Strouhal numbers which are calculated using outer diameter of a circular cylinder with serrated fins are higher than that of a circular cylinder. Fin thickness and pitch are closely related with vortex shedding frequency and play increasing or decreasing vortex shedding after transient Reynolds number. Strouhal numbers using effective diameters which are proposed in this paper agree with that of a circular cylinder. After transient Reynolds number, a trend of Strouhal number can be estimated by checking the ratio of effective diameter to inner diameter.
 Keywords
Equivalent Diameter;Hydraulic Diameter;Effective Diameter;Strouhal Number;
 Language
Korean
 Cited by
1.
톱니형 휜이 부착된 원주의 근접후류특성 연구 (II) - 시간평균 유동장 비교 -,류병남;김경천;부정숙;

대한기계학회논문집B, 2002. vol.26. 8, pp.1191-1200 crossref(new window)
 References
1.
Robert, D. Blevins, 1990, Flow-Induced Vibration, 2nd edition

2.
Tamotsu Igarashi, 1986, 'Effect of Tripping Wires on the Flow around a Circular Cylinder Normal to an Airstream,' Bulletin of JSME, Vol. 29, No. 255, pp. 2917-2924

3.
Emil Simiu and Robert, H. Scanlan, 1986, Wind Effect on Structures, 2nd edition

4.
Nakamura, Y., 1996, 'Vortex Shedding from Bluff Bodies and a Universal Strouhal Number,' Journal of Fluids and Structures, 10, pp. 159-171 crossref(new window)