Numerical investigation on gas dynamic resonance tube heating oscillating flow process

To understand the oscillating flow process of the gas dynamic resonance tube heating phenomenon, the explicit TVD-MacCormark scheme was used to numerically solve the two dimensional axis-symmetrical Reynolds averaged N-S equations. The flow fields of the complete oscillating turbulent flow field in one resonance cycle of the nozzle-resonance tube system were obtained. The results show that the inherent non-homogeneous structure and instability in the under-expanded sonic impinging jet is the internal reason for the occurrence of the resonance tube heating phenomenon and the shock wave dissipation is the main heating mechanism.