发动机进气流量对前缘水滴撞击特性的影响

发布时间：2018-01-15 19:09

本文关键词：发动机进气流量对前缘水滴撞击特性的影响　出处：《沈阳工业大学学报》2016年06期 　论文类型：期刊论文

【摘要】：为了掌握发动机进气流量对水滴撞击特性的影响规律,采用欧拉方法建立水滴运动方程,基于分区多块结构网格体系求解水滴运动轨迹,提出了复杂外形飞机水滴撞击特性的计算方法.基于该方法对发动机进气道唇口进行水滴撞击特性分析,研究了不同发动机进气流量对进气道唇口水滴撞击特性的影响.结果表明,发动机进气流量越大,水滴收集系数最大值越大.因此,航空发动机吊舱进气道前缘的防除冰系统设计必须考虑不同飞行状态下进气流量的影响.
[Abstract]:In order to understand the influence of engine intake flow rate on the impact characteristics of water droplets, the Euler method is used to establish the motion equation of water droplets, and the track of water droplets is solved based on the multi-block grid system. A method for calculating the impingement characteristics of aircraft water droplets with complex shapes is presented. Based on this method, the impingement characteristics of the inlet lip of the engine are analyzed. The effects of different intake flow rates on the impingement characteristics of the inlet lip droplets are studied. The results show that the higher the intake flow rate, the greater the maximum water droplet collection coefficient. The design of anti-icing system for the leading edge of the intake port of the aero-engine pods must take into account the influence of the intake air flow rate under different flight conditions.
【作者单位】：中国航空工业空气动力研究院高速高雷诺数气动力航空科技重点实验室;
【基金】：中航工业集团公司创新基金资助项目(2013A62601R)
【分类号】：V233.94
【正文快照】： 当飞机在含有过冷水滴的云层中飞行时,飞机迎风表面诸如机翼前缘、发动机进气口和雷达整流罩等部件上会出现结冰现象,而结冰现象的产生又有很大的随机性、突然性.飞机结冰是导致飞行安全事故的主要隐患,危害性巨大.飞机发动机吊舱进气道前缘(唇口)结冰不仅直接改变进气道前缘

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