摘要
A multicomponent thermal multi-relaxation-time(MRT)lattice Boltzmann method(LBM)is presented to study collapsing cavitation bubble.The simulation results satisfy Laplace law and the adiabatic law,and are consistent with the numerical solution of the Rayleigh-Plesset equation.To study the effects of the non-condensable gas inside bubble on collapsing cavitation bubble,a numerical model of single spherical bubble near a solid wall is established.The temperature and pressure evolution of the two-component two-phase flow are well captured.In addition,the collapse process of the cavitation bubble is discussed elaborately by setting the volume fractions of the gas and vapor to be the only variables.The results show that the non-condensable gas in the bubble significantly affects the pressure field,temperature field evolution,collapse velocity,and profile of the bubble.The distinction of the pressure and temperature on the wall after the second collapse becomes more obvious as the non-condensable gas concentration increases.
作者
杨雨
单鸣雷
韩庆邦
阚雪芬
Yu Yang;Ming-Lei Shan;Qing-Bang Han;Xue-Fen Kan(Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology,Hohai University,Changzhou 213022,China;College of Computer and Information,Hohai University,Nanjing 210000,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.11874140 and 11574072)
the State Key Laboratory of Acoustics,Chinese Academy of Sciences(Grant No.SKLA201913)
the National Key Research and Development Program of China(Grant No.2016YFC0401600)
the Primary Research and Development Plan of Jiangsu Province,China(Grant No.BE2016056)
the Postgraduate Research&Practice Innovation Program of Jiangsu Province,China(Grant Nos.2018B741X14 and KYCX180552)
the Postgraduate Research&Practice Innovation Program of Changzhou Campus,Hohai University,China(Grant No.17B01110)。
