孔隙介质中汽液两相流数值模拟的Lattice-Boltzmann方法  

Vapor-liquid two phase flow simulation in porous media with Lattice-Boltzmann method

作　　者：张新明[1] 刘家琦[1] 刘克安[2] 

机构地区：[1]哈尔滨工业大学深圳研究生院基础科学与人文学院,深圳518055 [2]哈尔滨工业大学数学系,哈尔滨150001

出　　处：《黑龙江大学自然科学学报》2011年第3期306-311,318,共7页Journal of Natural Science of Heilongjiang University

基　　金：国家自然科学基金资助项目(41004052);哈尔滨工业大学科研创新基金资助项目(HIT.NSRIF.2009135)

摘　　要：基于格子波尔兹曼方法(Lattice-Boltzmann Method,LBM)和Shan-Chen单组分多相流模型,用单组分两相流LBM方法对孔隙介质中等温汽液两相流流动特性进行了研究。通过理想状态下流体特性(相分离、表面张力计算、流固接触角、管道两相流以及变形液滴运动)的研究验证了LBM应用于孔隙介质两相流的可行性,并进一步研究了孔隙介质中润湿相入侵非润湿相的流动特性和固体润湿性对于流体流动的影响,再现了孔隙介质中流体流动的狭长薄膜形成、狭窄孔道流体卡断和非润湿性相聚集等现象。A single component,two-phase flow simulator is developed to investigate the behavior of isothermal two-phase fluid flow in porous media.The simulator is based on the Lattice-Boltzmann method and the Shan-Chen multiphase model of non-ideal fluids that allow coexistence of two phases of a single substance.Some different idealized situations（phase separation,surface tension,contact angle,pipe flow,and fluid droplet motion,et al））in which the results are already known from theory or laboratory measurements are reproduced,and the validity of the implementation for the physical two-phase flow in porous media is shown.Application of the method to fluid intrusion in porous media is discussed and shows the effect of wettability on the fluid flow.The capability of reproducing critical flooding phenomena（formation of advancing wetting film,snap off in throats and vapor condensation in pore） under strong wettability conditions is also proved.

关 键 词：孔隙介质 格子波尔兹曼方法 单组分两相流 流体入侵 

分 类 号：O359[理学—流体力学]