三维小球随机堆积多孔介质内黏弹性流体流动数值模拟分析  

Numerical Simulation Analysis of Viscoelastic Fluid Flow in Three-dimensional Randomly packed Porous Media

作　　者：贾雯 苏晓辉 曹元博 JIA Wen;SU Xiao-hui;CAO Yuan-bo(College of New Energy,Xi'an Shiyou University,Xi’an Shaanxi 710065,China)

机构地区：[1]西安石油大学新能源学院,陕西西安710065

出　　处：《当代化工》2024年第1期12-16,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金项目(No.51906202);西安石油大学研究生创新与实践能力培养计划资助(项目编号:YCS22214268)。

摘　　要：复杂流体在多孔介质内的流动广泛存在于自然界和工业生产中,研究复杂流体的非牛顿特性对多孔介质内流动的影响具有重要的意义。基于黏弹性流体本构方程,对三维颗粒随机堆积的多孔介质模型进行研究,获得了流体流变性质对多孔介质内流动特性的影响规律。研究发现,流体的流变性质对多孔介质流场内流动的压力降和渗透率等有着显著的影响。对于黏弹性流体来说,随着弛豫时间的增大,即流体的弹性增强,导致流场内压力降减小,渗透率增大;当表征剪切稀化效应的迁移因子增大时流场内部压力降减小,渗透率增大。The flow of complex fluids in porous media widely exists in nature and industrial production.It is of great significance to study the influence of non-Newtonian characteristics of complex fluids on the flow in porous media.Based on the constitutive equation of viscoelastic fluid,the three-dimensional porous media model with random accumulation of particles was studied,and the influence of fluid rheological properties on the flow characteristics in porous media was obtained.It was found that the rheological properties of the fluid had a significant effect on the pressure drop and permeability of the flow in the porous media flow field.For viscoelastic fluid,with the increase of relaxation time,the elastic enhancement of fluid led to the increase of pressure drop and permeability in the flow field.When the migration factor characterizing the shear thinning effect increased,the pressure drop inside the flow field decreased and the permeability increased.

关 键 词：黏弹性流体 多孔介质 孔隙率 数值模拟 渗透率 

分 类 号：TE832[石油与天然气工程—油气储运工程]