Comparison of different Krylov subspace methods embedded in an implicit finite volume scheme for the computation of viscous and inviscid flow fields on unstructured grids (Q1286088)

We compare currently used preconditioned Krylov subspace methods for inviscid and viscous flow engineering problems. The design of an implicit finite volume approximation of the Navier-Stokes equations on unstructured grids is described, whereby a new combination of isotropic triangulation with anisotropic subgrids is presented to achieve high resolution for high Reynolds number flows. Based on a specific selection of different inviscid and viscous flow fields, we discuss the choice of iterative method depending on the flow field for Euler and Navier-Stokes equations to get a stable and fast numerical scheme. \(\copyright\) Academic Press.