Numerical Calculation and Experiment of Shock Focusing

Abstract

This paper describes computational and experimental studies of the focusing of weak shock waves reflected from paraboric and circular reflectors. The numerical calculation was carried out appling Piecewise-Liniear-Method to the two-dimensional Euler equations. The experiment was performed using a shock tube with air as driver and driven gases and the shock focusing flow field was visualized by a conventional Schlieren technique. These studies were conducted for five different shapes of reflector for an initial shock Mach number of 1.1.