GSMAC-ALE有限要素法に基づいた流体固体連成解析

抄録

In the present paper, the explicit computational method for fluid-solid coupled system is proposed based on ALE (Arbitrary Lagrangian-Eulerian) GSMAC(Generalized-Simplified Marker and Cell)-FEM suitable for low capacity and high speed computation in order to analyze the interaction of fluid and flexible rubber-like solid. The stability of time-marching is improved by satisfying the fluid-solid strongly coupled equation in next time using the explicit iterative calculation. Only the Poisson equation for the pressure correction is computed implicitly in this coupled method. In order to verify the effectiveness for the problem that the fluid-solid interaction is large, two-dimensional vortex-induced vibration problem is analyzed about the interaction of vortices and elastic plate attached to rigid prism.