【摘要】 为了提高扇形喷嘴喷雾流场的均匀性，采用计算流体力学，基于欧拉-欧拉法构建模型对扇形喷嘴的两相流喷雾模型进行仿真，计算喷雾流场的流量分布，通过改变喷嘴的切槽角、切深、接口形状以及喷射压力参数，研究其对于雾场分布及其均匀性的影响。仿真计算显示，扇形喷嘴的喷雾流场具有三峰的流量分布，减小切槽角、增大切深以及选择扁椭球形状的接口形状均对流量分布的均匀性有改善效果。研究结果表明：扇形喷嘴流量的三峰分布由切口与管柱之间长度的偏差产生，形成了液流的奇异点。改进喷嘴参数能够改善奇异点与雾场的扩散性能，改善流量分布的均匀性。更多还原

【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.更多还原