Loading...
Please wait, while we are loading the content...
Similar Documents
Progress with multigrid schemes for hypersonic flow problems
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Radespiel, R. Swanson, R. C. |
| Copyright Year | 1991 |
| Description | Several multigrid schemes are considered for the numerical computation of viscous hypersonic flows. For each scheme, the basic solution algorithm uses upwind spatial discretization with explicit multistage time stepping. Two level versions of the various multigrid algorithms are applied to the two dimensional advection equation, and Fourier analysis is used to determine their damping properties. The capabilities of the multigrid methods are assessed by solving three different hypersonic flow problems. Some new multigrid schemes based on semicoarsening strategies are shown to be quite effective in relieving the stiffness caused by the high aspect ratio cells required to resolve high Reynolds number flows. These schemes exhibit good convergence rates for Reynolds numbers up to 200 x 10(exp 6) and Mach numbers up to 25. |
| File Size | 1820449 |
| Page Count | 46 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920005829 |
| Archival Resource Key | ark:/13960/t8cg4mr6z |
| Language | English |
| Publisher Date | 1991-12-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics High Reynolds Number High Aspect Ratio Multigrid Methods Reynolds Number Hypersonic Flow Fourier Analysis Convergence Advection Algorithms Flow Distribution Stiffness Computational Grids Grid Generation Mathematics Mach Number Viscous Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
