1003 APPLICATION OF A HIGHER ORDER LES MODEL TO STUDY SEPARATION CONTROL CFD VALIDATION TEST CASE

抄録

This work describes the performance of a high-order Large Eddy Simulation (LES) turbulent model related to the prediction of active control of flow separation over a wall mounted hump. The baseline conditions with no flow control, steady suction, and oscillatory blowing and suction flow control cases are considered for this study. The computed results are assessed to the results of experiment conducted by NASA which was one of the test cases in their 2004 CFD Validation on Synthetic Jets and Turbulent Separation Control Workshop. The main aim of this work is to have adequate understanding of the effects of leading parameters in controlling the flow separation, and to facilitate assessment of the mechanism of separation control. Therefore emphasis is put on the turbulence modeling related laminar-turbulent transition phenomena, unsteady flow separation phenomena, etc. A high order LES model developed by the first author is used to carry out 3-D unsteady turbulent viscous flow analysis by considering the whole model configuration.