摘要
本工作对非牛顿流体通过均匀球体的集合进行了实验测定,从Happl模型出发,用有限元进行计算,并将实验与理论计算结果对照作了讨论。本文从理论上阐明较宽e范围内不同n值幂律流体的孔隙介质流动的规律,并根据实验结果讨论解释了粘性、弹性和切力变稀等流变性在孔隙介质流动中的作用。
Experiment of flows of non-Newtonian fluids through the assemblages of uniform spheres is engaged, and an FEM simulation programme of the same problem based on Happl's unit cell model is conducted. In this article, the experimental facts and theoretical results of computation are addressed and porous media flows of powerlaw fluids of different shear-thinning properties are fairly explained. The effects of rheological properties such as elasticity, viscosity and the shear-thinning proeprty of the fluids on the flows through porous media are reasonably submitted in the work undertaken.
基金
国家自然科学基金资助
关键词
孔隙介质
非牛顿流体
均匀球体集合
porous media
non-newtonian flow
FEM numerical solution
unit cell model
Uniform sphere assemblages
