コンピュータシミュレーションによる人工心臓弁の定常流下流体動態解析

概要

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In this paper a numerical technique and simulation models are described to analyze flow patterns around prosthetic heart valves under steady flow conditions. The finite difference method was employed to solve the time-dependent and non-linear Navier-Stokes equations (NS eq.) for an incompressible viscous fluid. Chorin's scheme was used to solve the governing equations, NS eq. and equation of continuity. In this method the discretized algebraic equations approximating the governing differential equations were obtained from the analytic solutions of the governing equations ; this method was shown capable for providing a stable numerical solution and a proper simulation of the flow dynamics. The flow geometry, including a flow chamber and a prosthetic heart valve, was overlaid with a rectangular grid. The several types of clinical valves and the trial model valves developed in our laboratory were chosen as subjects of this study.
公益社団法人精密工学会の論文
1991-05-05