AN IMPLEMENTATION OF PARALLEL GMRES SOLUTION METHOD ON A 3-D UNSTRUCTURED FLOW SOLVER

A parallel GMRES (Generalized Minimal Residual) solution method is implemented on a 3-D flow solver developed earlier. An open source parallel GMRES software, pARMS (parallel Algebraic Recursive Multilevel Solvers), is used. pARMS uses MPI library routines to run in a parallel computing environment based on distributed memory. The flow solver, SET3D, employs a vertex based finite volume method on hybrid, unstructured grids. It currently has Euler explicit and Gauss-Seidel implicit time integration schemes. In this study, pARMS software is integrated into SET3D, and validated against certain test cases. The results show that the performance of the pARMS integrated flow solver is significantly enhanced.