Direct Numerical Simulation of Supersonic Turbulent Ramp and Step Flow
TECHNISCHE HOCHSCHULE AACHEN (GERMANY F R) INST FUER MECHANIK
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Direct numerical simulations of compressible fluid flow are performed for subsonic and supersonic channel flow with two symmetrically backward facing steps and for a supersonic compression ramp flow field. Spatial derivatives are represented by a central scheme of high order difference operators N2,4,6,8,... that is used together with artificial dissipation of order N. A two-step Richtmyer scheme is employed for time integration. In regions with steep gradients flux-corrected transport FCT according to Boris and Book is applied. Preliminary results are presented for Mach number 1.5 in case of the channel flow and further results for Mach number 2.84 in case of the ramp with a ramp angle of 24 degrees.
- Numerical Mathematics
- Fluid Mechanics