三次元弾性円環柱に対する流体・構造連成計算

抄録

The purpose of this study is to analyze the characteristic of deformation and stress distributions in a three dimensional elastic circular cylinder under fluid dynamic forces by a fluid-structure interactive numerical method. The numerical method is composed of a finite difference fluid solver and a finite element structure solver. An overset grid and geometrically conservative space-time finite volume techniques are used in the fluid solver. In the finite element structure solver, kinetic nonlinear effects of the structures from large displacement, large rotations, and large strains are considered. The three dimensional numerical simulations are carried out for an unsteady state flow as well as a steady state flow. The three dimensional characteristic of the deformation and stress distributions in the elastic circular cylinder are predicted by the numerical simulation.