J0102-2-5 オイラー型定式化による流体・構造体連成解析手法の発展(次世代生命体統合シミュレーション(2))

概要

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The main idea of the Eulerian fluid-structure interaction (FSI) model is derived from the idea of the multi-phase analysis on fixed Cartesian mesh. Usually, the approximate stress is averaged by fluid stress and solid stress with each volume fraction. Due to such simple averaging procedure, the numerical approach is reduced to first order accuracy. In this paper, an accurate numerical approach is applied for the Eulerian FSI model with using physical jump condition at the interface on fixed Cartesian mesh. Moreover, an implicit treatment of stress evaluation in elastic material which is based on linearization with the Jacobian in time is proposed. In addition, a result of FSI problem with pseudo-blood vessel will be shown toward application of a real blood flow simulation.
一般社団法人日本機械学会の論文
2009-09-12