关键词: 喷雾流场, 两相流, 计算流体力学, 扇形喷嘴, 均匀性

Abstract: In order to improve the uniformity of the fan nozzle spray flow field, the computational fluid mechanics was used to calculate the spray flow of fan nozzle through the two-phase flow model depending on the Euler-Euler method. The influence of fan-shaped nozzle parameters on the distribution and uniformity of fog field was researched by changing the groove cutting angle, cut depth, interface shape and the injection pressure simulatively. The Simulation shows that the spray flow field of fan nozzle has three peaks. The uniformity of flow distribution can be improved by reducing the groove cutting angle, increasing the cutting depth and selecting the ellipsoidal interface shape. The simulation results show that the three-peak flow distribution of the fan nozzle is caused by the deviation of the length between the notch and the string, which forms the singularity of the flow. Improving nozzle parameters can improve the diffusion performance of singularities and fog field, which makes it feasible to improve the uniformity of flow distribution.