Study on flow field and temperature field characteristics of gas-liquid two-fluid snowmaking nozzle

Abstract

A snowmaking nozzle based on the principle of supersonic speed of Laval nozzle is proposed, and the influence of its operation and structural parameters on flow field and temperature field characteristics is analysed. The results show that the gas-liquid mixture velocity outside the nozzle outlet increases with the increase of air inlet pressure, water inlet pressure and throat diameter, decreases with the increase of distance between water inlet and nozzle outlet. The gas-liquid mixture temperature outside the nozzle outlet increases as water inlet pressure and distance between water inlet and nozzle outlet increases, decreases as air inlet pressure and throat diameter increases. As gas-liquid pressure ratio increases, the gas-liquid mixture velocity outside the nozzle outlet tends to decrease first, then increase and then decrease, while its temperature tends to increase first, then decrease and then increase. When gas-liquid pressure ratio α = 3, this nozzle has the best performance.