0408 三次元境界要素法を用いた弾性変形する管内部での気泡崩壊に関する数値解析(OS4-2 キャビテーションおよびマイクロバブル効果とその応用技術,オーガナイズドセッション)

概要

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Understanding the interaction of a bubble with biotissue is important in order to clarify the mechanisms of tissue damage, such as vessel rupture, by acoustically excited bubbles. In the present work, the three-dimensional boundary element method was improved to simulate the collapse and rebound of a bubble in an elastic tube. The elastic wall was modeled with mass-spring systems. The three-dimensional deformation of the bubble, the deformation of the tube are taken into account in the simulation. The results show that the bubble on the axis of symmetry of the tube collapses following surface instability in the radial direction of the tube. On the other hand, when a bubble grows and collapses between the side wall and the axis, it translates toward the tube wall and the liquid jet occurs toward the wall in the collapsing phase.
一般社団法人日本機械学会の論文
2010-10-29