摘要
航空发动机整流帽罩作为飞机发动机结冰的关键部件之一,其表面的水滴撞击特性直接影响后续的结冰状态。为了得出整流帽罩在不同工况下的水滴撞击特性,采用欧拉法和单旋转坐标系,建立了航空发动机旋转整流帽罩的三维水滴撞击模型。分别模拟了整流帽罩在静止及旋转工况下的水滴撞击特性。结果表明,在静止工况下,随着来流马赫数的增加,水滴收集系数和撞击区均显著增大。相比单一直径,当考虑水滴的Langmuir-D分布时,驻点处水滴收集系数减少,撞击区域反而增加,下游区域的收集系数也会略有增大。在旋转工况下,由于整流帽罩的流线型外形特征,转速对水滴撞击特性的影响可以忽略不计。
As one of the critical components of aircraft engine icing,the water droplet impingement characteristics on the rotating fairing surface directly influences the subsequent icing state.To investigate the water droplet impingement behavior under different operating conditions,a three-dimensional water droplet impingement model for the rotating fairing of aero-engine was established by using the Euler method and single rotating coordinate system.The water droplet impingement characteristics of the rotating fairing under stationary and rotating conditions were simulated respectively.The results show that under stationary conditions,as the freestream Mach number increases,both the water droplet collection coefficient and impingement area exhibit significant growth;compared to single-diameter droplets,when considering the Langmuir-D distribution of water droplets,the collection coefficient at the stagnation point decreases,while the impingement zone increases and the downstream collection coefficient also slightly increases.Under rotating conditions,the rotational speed has negligible effects on droplet impingement characteristics due to the streamlined aerodynamic profile of the rotating fairing.
作者
李鹏宇
毛晓东
LI Pengyu;MAO Xiaodong(College of Aero-engine,Shenyang Aerospace University,Shenyang 110136,China)
出处
《沈阳航空航天大学学报》
2025年第4期23-29,共7页
Journal of Shenyang Aerospace University
基金
辽宁省“兴辽英才计划”项目(项目编号:XLYC1802092)。
关键词
旋转整流帽罩
水滴撞击
欧拉法
单旋转坐标系
水滴收集系数
rotating fairing
water droplet impingement
Euler method
single rotating coordinate system
water droplet collection coefficient
