【摘要】 针对造雪机中运行参数对内混式气液两相流喷嘴的雾化成雪问题，搭建了人工造雪环境模拟室，并对一种新型的内混式气液两相流雾化喷嘴开展了不同运行参数下的成雪密度实验研究。基于雪晶生长理论揭示了运行参数对于雾化喷嘴成雪密度的影响，为造雪机的设计与优化提供理论支撑。研究了该雾化喷嘴在不同气水压力比和湿球温度下的成雪密度变化规律，结果表明：气水压力比为0.4 MPa:0.4 MPa、0.5 MPa:0.45 MPa、0.5 MPa:0.4 MPa时，相同环境温度条件下，降低气水压力比可以提高成雪密度；湿球温度在-20.23～-5.36℃变化时，相同的气水压力比条件下，增加湿球温度可以提高成雪密度。更多还原

【Abstract】 Aiming at the problem of the operating parameters on the atomization of snow by internal mixed gas-liquid two-phase flow nozzles in snow-making machines, an artificial snow-making environment simulation room is set up, and the experimental study on the snow density of a new type of internal mixed gas-liquid two-phase flow nozzles with different operating parameters is carried out. Based on the snow crystal growth theory, the effect of operating parameters on the snow density of the atomizing nozzle is revealed, which provides theoretical support for the design and optimization of the snow-making machine. The snow density change rule of the atomizing nozzle under different air-water pressure ratio and wet bulb temperature is studied, and the main conclusions show that: the air-water pressure ratio is 0.4 MPa:0.4 MPa, 0.5 MPa:0.45 MPa, 0.5 MPa:0.4 MPa, and under the same ambient temperature condition, the reduction of the air-water pressure ratio can improve the snow density; the wet bulb temperature varies in the range of -20.23--5.36 ℃, and the snow density changes in the range of -20.23--5.36 ℃, under the same conditions of air-water pressure ratio, increasing the wet bulb temperature can improve the snow density.更多还原