A COMPUTATIONAL TECHNIQUE FOR HIGH ENTHALPY SHOCK-TUBE AND SHOCK TUNNEL FLOW SIMULATION

A contact discontinuity tracking method with a specially designed movi ng grid is developed to eliminate the interface smearing completely. I n order to precisely locate the contact surface, an updated Riemann so lver for unsteady one-dimensional inviscid flows is also developed to allow consideration of the specific heat ratio change across the shock wave. These two new computational techniques are illustrated in a hig h Mach number shock tube flow field computation.