A Parallel Time-Domain Maxwell Solver Using Upwind Schemes and Triangular Meshes

A Parallel Time-Domain Maxwell Solver Using Upwind Schemes and Triangular Meshes

Analysis and Improvement of Upwind and Centered Schemes on Quadrilateral and Triangular Meshes

Second-order accurate upwind and centered schemes are presented in a framework that facilitates their analysis and comparison. The upwind scheme employed consists of a reconstruction step (Van Leer 1977) followed by an upwind step (Roe 1981). The two centered schemes are of Lax-Friedrichs (L-F) type. They are the nonstaggered versions of the N-T scheme (called ORD in Nessyahu-Tadmor 1990) and t...

A Comparison between Domain Decomposition and Fully Implicit Approaches for a Parallel 3d Upwind Flow Solver

An implicit method for the solution of the 3D supersonic Euler equations is presented. The numerical technique adopted is a nite volume method based on an unfactored implicit upwind scheme. A great relevance is given to the deenition of the implicit operator and to the solution of the linear systems. A preconditioned iterative solver has been used showing better performance than unpreconditione...

Multigrid Acceleration of an Upwind Euler Solver on Unstructured Meshes

Multigrid acceleration has been implemented for an upwind ow solver on unstructured meshes. The ow solver is a straightforward implementation of Barth and Jespersen's unstructured scheme, with least-squares linear reconstruction and a directional implementation of Venkatakr-ishnan's limiter. The multigrid scheme itself is designed to work on mesh systems which are not nested, allowing great exi...

A Parallel Compressible 3D Navier-Stokes Solver Using Unstructured Meshes

We describe in this paper a strategy for parallelising a 3D compressible Navier-Stokes solver using unstructured meshes on a class of message-passing MIMD machines. The performance results obtained on two parallel machines, the Meiko Concerto and Intel iPSC860 are presented and compared to those obtained on CRAY.