Loading...
Please wait, while we are loading the content...
Similar Documents
Exploring hypersonic, unstructured-grid issues through structured grids
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kleb, Bill Mazaheri, Ali R. |
| Copyright Year | 2007 |
| Description | Pure-tetrahedral unstructured grids have been shown to produce asymmetric heat transfer rates for symmetric problems. Meanwhile, two-dimensional structured grids produce symmetric solutions and as documented here, introducing a spanwise degree of freedom to these structured grids also yields symmetric solutions. The effects of grid skewness and other perturbations of structured-grids are investigated to uncover possible mechanisms behind the unstructured-grid solution asymmetries. By using controlled experiments around a known, good solution, the effects of particular grid pathologies are uncovered. These structured-grid experiments reveal that similar solution degradation occurs as for unstructured grids, especially for heat transfer rates. Non-smooth grids within the boundary layer is also shown to produce large local errors in heat flux but do not affect surface pressures. |
| File Size | 1980614 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20070029423 |
| Archival Resource Key | ark:/13960/t1kh5jw0p |
| Language | English |
| Publisher Date | 2007-06-25 |
| Access Restriction | Open |
| Subject Keyword | Mathematical And Computer Sciences (general) Degradation Hypersonics Errors Asymmetry Structured Grids Mathematics Unstructured Grids Mathematics Skewness Perturbation Computational Grids Pressure Heat Transfer Heat Flux Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
