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Advisor(s)
Abstract(s)
The impact zone of a wall jet with a boundary layer is studied computationally using a Reynolds averaged Navier-Stokes (RANS) approach with the "κ-ε" turbulence model. The computational domain corresponds to complete experimental rig and the measured boundary conditions were used. It was found that the gross features of the flow are well predicted, and the fluctuations of the flowfield around the ground vortex occur in a very small region near the wall where the impact between each flow occurs. The computational results showed a cyclic formation of two small secondary vortexes that appear and disappear cyclically around the separation and maximum penetration points of the ground vortex.
Description
Keywords
Vortex Flow Boundary Layer Thickness Reynolds Averaged Navier Stokes Hot Gas Ingestion Turbulence Models Numerical Modeling Eddy Viscosity Normal Stress Aircraft Fuselages Propulsion System
Citation
Silva, A.R.R., Barata, J.M.M., Nunes, R.F., Santos, P. Unsteadiness of Ground Vortex Flow 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition, Orlando, Florida, EUA, 5-8 janeiro, 2009 DOI: 10.2514/6.2009-407
Publisher
American Institute of Aeronautics and Astronautics Inc