GSMAC-CIP有限要素法による正方形Cavity内強制対流解析

概要

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Recently, flow analysis using CFD (Computational Fluid Dynamics) has become very important in comparison with EFD (Experimental Fluid Dynamics). Generally, if the fluid flows rapidly, the advection of fluid particles makes the calculation difficult, and the numerical solution becomes unstable. The CIP method gets much attention for highly accurate solution of the advection equation. In this paper, the authors analyze a model of the advection skew to the mesh using the modified CIP method in which a discontinuous surface of potential is included and show a verification of validity for the advection-diffusion equation. We also propose the GSMAC-CIP method as a fractional step method with three phases to Navier-Stokes equation which is an application of the CIP method to the advection term. This new scheme can avoid a lowing of computational efficiency in the calculation of Poisson equation and give a highly accurate result in the numerical analysis of a forced convection in the two dimensional cavity.
日本シミュレーション学会の論文
1997-12-15