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High order numerical methods for les of turbulent flows with shocks
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hadjadj, A. Kotov, D. V. Yee, H. C. Wray, A. Sjögreen, B. |
| Copyright Year | 2014 |
| Description | Simulation of turbulent flows with shocks employing explicit subgrid-scale (SGS) filtering may encounter a loss of accuracy in the vicinity of a shock. In this work we perform a comparative study of different approaches to reduce this loss of accuracy within the framework of the dynamic Germano SGS model. One of the possible approaches is to apply Harten's subcell resolution procedure to locate and sharpen the shock, and to use a one-sided test filter at the grid points adjacent to the exact shock location. The other considered approach is local disabling of the SGS terms in the vicinity of the shock location. In this study we use a canonical shock-turbulence interaction problem for comparison of the considered modifications of the SGS filtering procedure. For the considered test case both approaches show a similar improvement in the accuracy near the shock. |
| File Size | 858417 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20160003302 |
| Archival Resource Key | ark:/13960/t70w3gr2f |
| Language | English |
| Publisher Date | 2014-07-14 |
| Access Restriction | Open |
| Subject Keyword | High Order Turbulent Flows Les Supersonic Flow Reynolds Stress Shock Waves Accuracy Numerical Analysis Turbulent Flow Large Eddy Simulation Computational Fluid Dynamics Computational Grids Boundary Layers Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
