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직교 격자를 이용한 저 레이놀즈 수에서의 다중 배치된 실린더의 VIV 해석
한명륜(M. R. Han),안형택(H . T. Ahn) 한국전산유체공학회 2010 한국전산유체공학회 학술대회논문집 Vol.2010 No.11
In this paper, the vortex-induced vibration of circular cylinders is studied using the immersed boundary method on the Cartesian mesh. The Reynolds numbers considered in this study is from 100 to 200. When multiple circular cylinders are arranged side-by-side or tandemly, the vortex shedding behind of the cylinders and the flow-induced motion are investigated. The staggered MAC grid method, which is typical grid system for the Cartesian mesh, and pressure correction method are applied for solving the incompressible Navier-Stokes equations. The body motion is described by immersed boundary technique that has advantages for moving oject in the simulation domain. It is also discussed for the computation noise when body is moving with IBM. The Predictor/Corrector method is used for simulating the nonlinear response of body surrounded by the fluids.