E-332 直交格子による移動境界問題の数値解析

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  • Numerical Simulation of Moving Boundary Problem by Cartesian Grid Method

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In this paper, the Cartesian grid method with cut cells are used to simulate incompressible viscous flows around moving objects. Only pressure component on small cut cells are calculated directly. The code was developed based on Fractional Step Method on Finite Volume Method. In time integrate, the second order explicit Adams-Bashforth method was used for the convective terms and second order implicit Crank-Nicholson method was used for the diffusive terms. The code was tested on stationary circular cylinder firstly. Later, we simulated some moving boundary problems using the presented code and compared with other previous numerical and experimental results.

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