This study determines the mean and fluctuating pressures for flow through a rectangular shallow cavity (ratio between length depth = 2.43, 4.43, 6.14; ratio width 0.5, 1.0, 2.0) at Mach number of 0.64 in blowdown transonic wind tunnel. A amplitude modulation analysis is used post-processing pressure signals. The spectral (wavelet) shows intermittent behavior discrete Rossiter–Heller modes. corr...

Two-point space–time correlation and Fourier spectrum analysis are applied to large-eddy simulation results of a compressible parallel jet flow at Reynolds number 2000 Mach 0.9. Flow properties including instantaneous vortical structures, intermittency, convection velocity pressure signals in the near flow-field presented discussed. The show multi-scale features structures after transition. Hig...

In this study we highlight the influence of mean dilatation and mean density gradient on the Reynolds stress modeling of compressible, heat-releasing and supercritical turbulent flows. Firstly, the modeling of the rapid pressure-strain correlation has been extended to self-consistently account for the influence of mean dilatation. Secondly, an algebraic model for the turbulent density flux has ...

High-order Discontinuous Galerkin (DG) methods have shown a lot of promise in being able to provide high accuracy and efficiency as well as the flexibility to handle complex unstructured grids. However in order to solve compressible flow problems effectively, we need to be able to detect discontinuities/shocks in the flow and capture them effectively such that the solution accuracy is not affec...