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Penalized VIC 방법에서 장시간 유동 해석을 위한 원거리 와도 입자 처리
조은별(E.B. Jo),이승재(S.-J. Lee),서정천(J.-C. Suh) 한국전산유체공학회 2017 한국전산유체공학회지 Vol.22 No.1
A penalized VIC method offers an efficient hybrid particle-mesh algorithm to simulate an incompressible viscous flow passing a solid body in an infinite domain. In this manner, the computational domain needs to be restricted to a relatively small region to reduce computational cost which would be very high in case of using a large domain. In this paper, we present how to dispose of far-field particles to avoid an unnecessarily large computational domain. The present approach constraints expansion of the domain and thus prevents the incremental computational cost. To validate the numerical approach, a flow around an impulsively started sphere was simulated for Reynolds numbers of 100 and 1000.