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Three-dimensional navier-stokes simulations with two-equation turbulence models of intersecting shock-waves/turbulent boundary layer at mach 8.3
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Coakley, T. J. Bardina, J. E. |
| Copyright Year | 1994 |
| Description | An investigation of the numerical simulation with two-equation turbulence models of a three-dimensional hypersonic intersecting (SWTBL) shock-wave/turbulent boundary layer interaction flow is presented. The flows are solved with an efficient implicit upwind flux-difference split Reynolds-averaged Navier-Stokes code. Numerical results are compared with experimental data for a flow at Mach 8.28 and Reynolds number 5.3x10(exp 6) with crossing shock-waves and expansion fans generated by two lateral 15 fins located on top of a cold-wall plate. This experiment belongs to the hypersonic database for modeling validation. Simulations show the development of two primary counter-rotating cross-flow vortices and secondary turbulent structures under the main vortices and in each corner singularity inside the turbulent boundary layer. A significant loss of total pressure is produced by the complex interaction between the main vortices and the uplifted jet stream of the boundary layer. The overall agreement between computational and experimental data is generally good. The turbulence modeling corrections show improvements in the predictions of surface heat transfer distribution and an increase in the strength of the cross-flow vortices. Accurate predictions of the outflow flowfield is found to require accurate modeling of the laminar/turbulent boundary layers on the fin walls. |
| File Size | 891712 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960047570 |
| Archival Resource Key | ark:/13960/t81k4b958 |
| Language | English |
| Publisher Date | 1994-06-23 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Computational Fluid Dynamics Turbulent Boundary Layer Fins Boundary Conditions Computerized Simulation Velocity Distribution Three Dimensional Boundary Layer Yaw Navier-stokes Equation Shock Waves Hypersonic Speed Aerospace Vehicles Three Dimensional Flow Vortices Turbulence Models Numerical Flow Visualization Heat Transfer Plates Cross Flow Boundary Layer Flow 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 |
