Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)
- Volume 22 Issue 7
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- Pages.889-898
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- 1998
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- 1226-4881(pISSN)
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- 2288-5324(eISSN)
DOI QR Code
An experimental study of flow separation around a circular cylinder with Reynolds number and free stream turbulence intensity variations
Reynolds수와 난류강도의 변화에 따른 실린더 주위 유동 박리점의 거동에 관한 실험적 연구
- Im,Yong-Seop (Dept.of Mechanical Engineering, Seoul National University) ;
- Son, Dong-Gi (Dept.of Mechanical Engineering, Seoul National University) ;
- Yang, Gyeong-Su ;
- Lee, Jun-Sik
- Published : 1998.07.01
Abstract
The influences of the Reynolds number and free-stream turbulence intensity on the flow separation behavior around a circular were investigated experimentally. The range of the Reynolds number and turbulence intensity considered are 10,000 ~ 45,000 and 0.3 ~ 6.8%, respectively. Because of ineffectiveness of using time-mean value of hot-film sensor signals in determining the separation location around the cylinder, a new method using phase-difference of hot-film sensor signals with hot-wire being located in shedding vortex is suggested. The validity of the present method is confirmed by the comparison with flow visualization.
Keywords