THE 2-DIMENSIONAL SUPERSONIC-FLOW AND MIXING FIELD WITH A PERPENDICULAR INJECTION

The present study involves the investigations of the supersonic flow a nd mixing fields with the injection. The simulations are performed by solving the full two-dimensional Navier-Stokes equations using the exp licit TVD scheme. First, the problem is examined when the two-equation turbulence model is applied to the flow with the injection. The resul ts show that the wall law cannot be used and the standard coefficients are inadequate. Consequently the q-omega model is used without the wa ll law because the k-epsilon model has the difficulty of the near wall treatment without the wall law. Second, the influences are examined w hen the pressure wave exists in the flow with the injection. The resul ts show that the oblique shock wave makes the hydrogen distribution re gion narrow, whereas the expansion wave makes it wide. But the mixing efficiency increases for the shock wave, and decreases for the expansi on wave.