单腔离心喷嘴出口空心涡直径和平均液雾锥角的半理论预测

发布时间：2017-12-30 21:05

本文关键词：单腔离心喷嘴出口空心涡直径和平均液雾锥角的半理论预测　出处：《航空动力学报》2017年04期 　论文类型：期刊论文

【摘要】：利用流体控制体法结合质点系动量矩守恒定理,分析了液体的黏性作用对离心喷嘴空心涡尺寸的影响机制,建立了相关理论模型,并给出了喷嘴出口空心涡直径和平均液雾锥角的半理论预测公式.同时,用多组不同工况条件下的实验测量数据对该预测公式进行了验证.结果表明:提出的预测公式计算离心喷嘴出口空心涡直径和平均液雾锥角是有效的,且具有较高的计算精度;空心涡直径的预测不确定度约为±13%,平均液雾锥角的预测不确定度在-20%~6%之间.
[Abstract]:Based on the fluid control volume method and the conservation theorem of momentum of particle system, the influence mechanism of liquid viscosity on the size of hollow vortex of centrifugal nozzle is analyzed, and the relevant theoretical model is established. The semi-theoretical prediction formulas for the diameter of the hollow vortex at the nozzle outlet and the average cone angle of the liquid fog are also given. The prediction formula is verified by the experimental data under different working conditions. The results show that the proposed formula is effective in calculating the diameter of hollow vortex at the outlet of centrifugal nozzle and the average cone angle of liquid fog. And it has high calculation precision. The prediction uncertainty of the diameter of the hollow vortex is about 卤13 and the prediction uncertainty of the average cone angle of the liquid mist is between -20% and 6%.
【作者单位】：北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室;先进航空发动机协同创新中心;
【分类号】：O35
【正文快照】： 引用格式:刘志林,黄勇.单腔离心喷嘴出口空心涡直径和平均液雾锥角的半理论预测[J].航空动力学报,2017,32(4):926-931.LIU Zhilin,HUANG Yong.Semi-theoretical prediction of air core diameter and averaged spray cone angle at simplex swirlatomizer exit[J].Journal of

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