Parallel BIILU2-Based Iterative Solution of Linear Systems in Reservoir Simulation: Do Optimal Parameters Exist?

Three-phase black oil model for SPE-10 test problem with highly heterogeneous permeability and porosity fields was considered. A set of linear systems by the research parallel three-phase fully implicit black oil simulator was generated. The parallel performance of the MPI-based BIILU2 linear solver with the default parameters on such systems was analyzed. The trends in the choice of optimal BIILU2-based linear solver parameters for such systems were determined.