Pore-scale Simulation of High-density-ratio Multiphase Flows in Porous Media Using Lattice Boltzmann Method
نویسندگان
چکیده
A lattice Boltzmann high-density-ratio model, which uses diffuse interface theory to describe the interfacial dynamics and was proposed originally by Lee and Liu [T. Lee, L. Liu, Lattice Boltzmann simulations of micron-scale drop impact on dry surfaces, J. Comput. Phys. 229(2010) 8045-8063], is extended to simulate multiphase flows in porous media. A wetting boundary treatment is proposed for the concave and convex corners. Capability and accuracy of this model is validated by simulations of equilibrium contact angle, and the injection of a non-wetting gas into two parallel capillaries. This model is also used to simulate immiscible displacement in a micromodel, and some interesting phenomena are observed.
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