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Multigrid solution of compressible turbulent flow on unstructured meshes using a two-equation model
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mavriplis, D. J. Martinelli, L. |
| Copyright Year | 1991 |
| Description | The system of equations consisting of the full Navier-Stokes equations and two turbulence equations was solved for in the steady state using a multigrid strategy on unstructured meshes. The flow equations and turbulence equations are solved in a loosely coupled manner. The flow equations are advanced in time using a multistage Runge-Kutta time stepping scheme with a stability bound local time step, while the turbulence equations are advanced in a point-implicit scheme with a time step which guarantees stability and positively. Low Reynolds number modifications to the original two equation model are incorporated in a manner which results in well behaved equations for arbitrarily small wall distances. A variety of aerodynamic flows are solved for, initializing all quantities with uniform freestream values, and resulting in rapid and uniform convergence rates for the flow and turbulence equations. |
| File Size | 1671179 |
| Page Count | 46 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910009730 |
| Archival Resource Key | ark:/13960/t87h6h502 |
| Language | English |
| Publisher Date | 1991-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Low Reynolds Number Turbulent Flow Multigrid Methods Computational Fluid Dynamics Runge-kutta Method Steady State Navier-stokes Equation Flow Equations Time Marching K-epsilon Turbulence Model Mathematical Models Computational Grids Free Flow Compressible Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
