作用力求取方法对多相伪势模型的影响  

Schemes for Interpartical Interaction Forces in Multiphase Shan-Chen Model

作　　者：胡安杰[1] 李隆键[1] 曾建邦[2] 

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400030 [2]中国科学院可再生能源与天然气水合物重点实验室,广州510640

出　　处：《计算物理》2012年第6期828-836,共9页Chinese Journal of Computational Physics

基　　金：国家自然科学基金(51076172)资助项目

摘　　要：基于伪势模型将有效密度和势函数结合计算粒子间相互作用力,提出一种改进描述气液相变的格子Boltzmann模型.对不同状态方程控制的单组份流体相变过程进行模拟发现,与单纯由有效密度或势函数计算粒子间相互作用力的方法相比,该模型的结果与Maxwell构建更吻合,且最大伪速度更小,扩大了温度的计算范围,提高了模型的稳定性.基于Laplace定律对界面现象模拟结果进行讨论,模拟结果与Laplace定律吻合.A single-component multiphase lattice Boltzmann model which combines effective mass function with special potential in calculating interparticle potential based on Shan-Chen model is proposed.Accuracy of the model is verified by simulating single-component phase change process.Different equations of state are explored in the model.It shows that the model has many advantages： It tallies with the Maxwell construction more precisely;The maximum magnitude of spurious current is smaller and the range of simulation temperature is greater.Laplace tests is carried out and simulated results are in conformity.

关 键 词：格子BOLTZMANN方法 粒子间相互作用力 相变 伪势模型 

分 类 号：O359.1[理学—流体力学]