Numerical investigation of shock induced bubble collapse in water
Numerical investigation of shock induced bubble collapse in water
复制标题
DOI：
10.1063/1.4944903
复制
发表时间：
2016-04
影响因子：
4.6
通讯作者：
N. Apazidis
中科院分区：
文献类型：
--
作者：
N. Apazidis
将一种半保守、稳定、相间捕获的非均质系统激波传播数值格式应用于液气系统的激波传播问题。该方案基于液相和气相运动方程的体积分数公式，并具有单独的状态方程。控制方程的半保守公式保证了在液体和气相之间的物质界面上不存在虚假的压力振荡。研究了水中平面激波与单个球形气泡及相邻双气泡的相互作用。考虑了相互作用过程的几个阶段，包括在变形气泡内传递激波的聚焦，水锤激波的产生以及过程后期高速液体射流的产生。
A semi-conservative, stable, interphase-capturing numerical scheme for shock propagation in heterogeneous systems is applied to the problem of shock propagation in liquid-gas systems. The scheme is based on the volume-fraction formulation of the equations of motion for liquid and gas phases with separate equations of state. The semi-conservative formulation of the governing equations ensures the absence of spurious pressure oscillations at the material interphases between liquid and gas. Interaction of a planar shock in water with a single spherical bubble as well as twin adjacent bubbles is investigated. Several stages of the interaction process are considered, including focusing of the transmitted shock within the deformed bubble, creation of a water-hammer shock as well as generation of high-speed liquid jet in the later stages of the process.