대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)
- 제20권2호
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- Pages.649-658
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- 1996
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- 1226-4881(pISSN)
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- 2288-5324(eISSN)
DOI QR Code
다수의 주상체들의 저진폭 동위상 진동에 의한 2차 정상유동 해석
Secondary Steady Flows Due to the Small-Amplitude In-Phase Oscillation of Multi-Cylinders
- 김성균 (건국대학교 기계공학과)
- Kim, Seong-Gyun (Dept.of Mechanical Engineering, Kunkuk University)
- 발행 : 1996.02.01
초록
Small-amplitude harmonic oscillations of multi-cylinders are considered both experimentally and theoretically. For the theoretical model, the flow regime is separated into inner and outer regions. In the inner region, the flow is governed by the generalized Stokes boundary layer equation. In the outer region, the full Navier-Stokes equation for the steady streaming flow is solved numerically by using ADI scheme and FVM coupled with the boundary integral method. Flow visualization experiments are conducted by using the Laser Sheet Image Technique. The case of two circular cylinders and square cylinders with variable distances are chosen as a typical example. Although experimental results are based on the flow in the finite domain, both experimental and numerical results agree well qualitatively. As the separation of cylinders is increased, a numerical result shows the asymptotic convergence to a single cylinder case.
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