TRANSITION FOR REGULAR TO MACH REFLECTION: HYSTERESIS PHENOMENA

Razik Benderradji, Abdelhadi Beghidja, Hamza Gouidmi

Abstract: The purpose of this research is to perform numerical calculations on supersonic flows in a convergent-divergent nozzle and more particularly to the study of the transition regular reflection to Mach reflection and vice versa – hysteresis loop phenomena. The latter method has been extensively studied in recent years. In this study the numerical simulations are performed for transient supersonic flow, detection of the transition from reflection to another. This was done by changing the upstream Mach number in the initial conditions over time. The viscosity was taken into account and all of the Navier-Stokes equations were solved. The results clearly show the existence of a hysteresis loop in the transition transient shock waves.

Keywords: Shock wave, Interference of shock, Regular reflection, Mach reflection, Polar of shock.

DOI: https://doi.org/10.15623/ijret.2014.0305016