Damped, direction-dependent multigrid for hypersonic flow computations

Damped , direction - dependent multigrid for hypersonic flow computations *

Koren, B. and P.W. Hemker, Damped, direction-dependent multigrid for hypersonic flow computations, Applied Numerical Mathematics 7 (1991) 309-328. A nonlinear multigrid technique with improved robustness is developed for the solution of the steady Euler equations. The system of nonlinear equations is discretized by an upwind finite volume method. Collective symmetric point Gauss-Seidel relaxati...

Hypersonic Flow Computations on Unstructured Meshes

A method for computing inviscid hypersonic ow over complex con gurations using unstructuredmeshes is presented. The unstructured grid solver uses an edge{based nite{volume formulation. Fluxes are computed using a ux vector splitting scheme that is capable of representing constant enthalpy solutions. Second{order accuracy in smooth ow regions is obtained by linearly reconstructing the solution, ...

An Evaluation of Euler Fluxes for Hypersonic Flow Computations

Evaluation of Euler Fluxes for Hypersonic Flow Computations

Shock-capturing finite volume schemes often give rise to anomalous results in hypersonic flow.We present a wideranging survey of numerical experiments from 12 different flux functions in oneand two-dimensional contexts. Included is a recently developed function that satisfies the second law of thermodynamics. It is found here that there are at least two kinds of shock instabilities: one is one-...

Three-dimensional unsteady incompressible flow computations using multigrid

We apply a robust and computationally efficient multigrid-driven algorithm for the simulation of time-dependent three-dimensional incompressible bluff body wakes at low Reynolds numbers (Re less than or equal to 350). The computational algorithm combines a generalized time-accurate artificial compressibility approach, a finite-volume discretization in space, and an implicit backward discretizat...