A study of shock wave propagation in T-type branched duct

A detailed time dependent behaviour of an unsteady shock wave through the T-type branched duct is investigated with both numerical and experimental methods. In order to study the effect of initial shock Mach number, Ms and the geometry of the duct on the unsteady shock motion, unsteady two-dimensional Navier-Stokes equations are solved by upwind scheme. The complicated flow fields including incident and reflected shock waves, vortex and expansion waves are visualized, and compared with experimented ones. The obtained results show when the shock wave with high initial shock Mach number generates the stronger vortex, increases the strength of reflected shock wave. Furthermore, it is found that the present computational and experimental results are good agreement