Studies of Robust Two-Stage Preconditioners for the Solution of Fully Implicit Multiphase Flow Problems


The solution of the linear system of equations for a large scale reservoir simulation has several challenges. Preconditioners are used to speed up the convergence rate of the solution of such systems. In theory, a preconditioner defines a matrix M that can be inexpensively inverted and represents a good approximation of a given matrix A. In this work, two… (More)

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