Numerical Study on Producing Mechanism of Pseudo-Shock Waves in Interacting Process of Reflected Shock Wave with Contact Surface.

In this paper, the pseudo-shock wave produced in the process of the interaction of the reflected shock wave with the contact surface in a shock tube were investigated numerically in order to crarify the mechanism of its production. The computations were carried out by solving the two dimensional and compressible Navier-Stokes equations by means of TVD method. The calculations were performed for the various strengths of the shock waves, and the flow fields were expressed by means of the contour lines of the presure and the density, velocity vectors, pressure distributions and the distance-time diagrams of the shock waves. The numerical results showed clearly the process of the production and the development of the pseudo-shock wave, and the effects of the strength of the reflected shock wave and Reynolds number of the flow were clarified.