Cavitation Bubble Collapse near a Curved Wall by the Multiple-Relaxation-Time Shan–Chen Lattice Boltzmann Model
Hong-Hui Xue1, Feng Shan1, Xia-Sheng Guo1, Juan Tu1, Dong Zhang1,2**
1Key Laboratory of Modern Acoustics (MOE), School of Physics, Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing 210093 2State Key Laboratory of Acoustics, Chinese Academy of Science, Beijing 100190
Abstract：The cavitation bubble collapse near a cell can cause damage to the cell wall. This effect has received increasing attention in biomedical supersonics. Based on the lattice Boltzmann method, a multiple-relaxation-time Shan–Chen model is built to study the cavitation bubble collapse. Using this model, the cavitation phenomena induced by density perturbation are simulated to obtain the coexistence densities at certain temperature and to demonstrate the Young–Laplace equation. Then, the cavitation bubble collapse near a curved rigid wall and the consequent high-speed jet towards the wall are simulated. Moreover, the influences of initial pressure difference and bubble-wall distance on the cavitation bubble collapse are investigated.
2017, Vol. 34 
