Numerical simulation of non-equilibrium condensation in convergent-divergent nozzle

The non-equilibrium condensation in transonic nozzle flows results in latent heat releasing to the flow and the spontaneous generation of liquid droplet. The condensing convergent-divergent nozzle flow is numerical simulated by coupling solving the N-S equation and condensate mass equation at different nozzle pressure ratios (NPR) and initial supersaturation. The results show that, in a supersonic expansion convergent-divergent nozzle flow, high cooling rate results in a high value of nucleation rate. The nozzle flow is affected by the latent heat released, the total temperature increases, mass flow rate decreases, and the sonic line moves backward.