Unsteady Rayleigh Flow at Transonic Speeds

摘要

Unsteady Rayleigh flow in the vicinity of choking conditions has been investigated analytically based on fundamental governing equations. The results have been illustrated as the variation of flow Mach number on continuous unsteady heating through the choking point. From the obtained results, it is obvious that the effect of m cannot be ignored at the choking point for both subsonic and supersonic Rayleigh flows. The investigation provided an insight into transition of flows across the choking point when heat is transferred to it. Similar investigation can be extended to combustion processes taking into account the change of mass flow in the system due to fuel injection also. The analysis indicates coupling of governing equations for flow parameters based on both heat transfer and change in mass flow in the vicinity of the choking point.