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多孔介质中两相不可压缩流体的数学模型是一组非线性偏微分方程．本文给出了三维两相驱动问题的差分方法，并进行了收敛性分析
The mathematical model of a two-phase incompressible fluid in porous media is a set of nonlinear partial differential equations. In this paper, the difference method of three-dimensional two-phase driving problem is given and the convergence analysis is carried out