11404 拡張個別要素法を用いた衝撃波-固体干渉シミュレーション(流体工学(1))

概要

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In this paper, we propose a numerical technique for the analysis of shock-solid interaction problem like a 'shock wave focusing technology' which is used for crushing the calculus formed in the human body. An interaction phenomenon between a shock wave and a cantilever beam which is mounted in a shock tube is a simple model of such problems. The beam is composed of many particles and EDEM (Extended Distinct Element Method) is used for simulating their motion determined by the external forces. The flow field is computed using TVD (Total Variation Diminishing) scheme simultaneously, and the forces caused by the fluid motion are estimated using the pressure distribution near the particle. In the computational results, the deflection of the beam caused by the shock wave is shown to occur and the flow pattern around the beam is found to be affected by its oscillation.
一般社団法人日本機械学会の論文
2007-03-15