Analysis of unsteady behavior in shockwave turbulent boundary layer interaction
M. Grilli, P.J. Schmidt, S. Hickel, N.A. Adams (2012)
Journal of Fluid Mechanics 700: 16-28. doi: 10.1017/jfm.2012.37
The unsteady behaviour in shockwave turbulent boundary layer interaction is investigated by analysing results from a large eddy simulation of a supersonic turbulent boundary layer over a compression–expansion ramp. The flow dynamics are analysed by a dynamic mode decomposition which shows the presence of a low-frequency mode associated with the pulsation of the separation bubble and accompanied by a forward–backward motion of the shock.
Large Eddy Simulation of turbulence enhancement due to forced shock motion in shock boundary layer interaction
O.C. Petrache, S. Hickel, N.A. Adams (2011)
AIAA paper 2011-2216. doi: 10.2514/6.2011-2216
We present Implicit Large-Eddy Simulations of a shockwave-turbulent boundary layer interaction with and without localized heat addition. For an entropy spot generated ahead of the shock, baroclinic vorticity production occurs when the resulting density peak passes the shock.