DNS of Turbulent Supersonic Channel Flow

摘要: Direct numerical simulations are performed in nominally fully developed channel flow at global Mach and Reynolds numbers of 1.5 3000. A pressure — velocity entropy form the compressible Navier Stokes equations is integrated using a fifth order compact upwind scheme for Euler part, fourth Pade viscous terms third low storage Runge Kutta time integration method. The work aims increasing insight into effects compressibility. To this end nature fluctuating variables investigated scatter plots, while structural compressibility analysed based on stress budgets comparisons with their incompressible counterparts. DNS data turbulent supersonic along permeable walls M = Re 3000 used to analyze which way wall permeability modifies turbulence structure flow.