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Coarsening strategies for unstructured multigrid techniques with application to anisotropic problems
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mavriplis, D. J. Morano, E. Venkatakrishnan, V. |
| Copyright Year | 1995 |
| Description | Over the years, multigrid has been demonstrated as an efficient technique for solving inviscid flow problems. However, for viscous flows, convergence rates often degrade. This is generally due to the required use of stretched meshes (i.e., the aspect-ratio AR = delta y/delta x is much less than 1) in order to capture the boundary layer near the body. Usual techniques for generating a sequence of grids that produce proper convergence rates on isotopic meshes are not adequate for stretched meshes. This work focuses on the solution of Laplace's equation, discretized through a Galerkin finite-element formulation on unstructured stretched triangular meshes. A coarsening strategy is proposed and results are discussed. |
| File Size | 369821 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950023806 |
| Archival Resource Key | ark:/13960/t7np70j1t |
| Language | English |
| Publisher Date | 1995-05-01 |
| Access Restriction | Open |
| Subject Keyword | Numerical Analysis Finite Element Method Multigrid Methods Computational Fluid Dynamics Unstructured Grids Mathematics Laplace Equation Galerkin Method Grid Generation Mathematics Aspect Ratio Viscous Flow Convergence Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
