摘要
用带数值扩散项的欧拉法对某型三维发动机进气道水滴撞击特性进行了研究.实现了可压流场中三维复杂形体的局部水滴收集系数的计算.数值扩散项的引入解决了欧拉法计算产生奇异结果发散的问题.通过对不同进气道流量的算例结果的比较,发现进气道流量对进气道唇口附近的水滴撞击区和撞击量都有影响.进气量大,最大局部水滴收集系数也大.通过对有无整流罩的计算结果进行比较,发现此型发动机整流罩对水滴撞击特性的影响很小.
Droplets impingement characteristics of a certain 3D engine inlet were analyzed using an Eulerian method with numerical diffusion.Calculation of 3D complex body＇s local droplet collection efficiency was conducted in the compressible flow field.With numerical diffusion,the problems of singularity and divergence were solved.Cases of different mass flow rates were calculated with and without cowling.Results show that mass flow rate influents on the impinging area and amount around engine inlet lip.The bigger is engine mass flow rate,the larger is the maximum local droplet collection efficiency.The results also show that the influence of cowling on this engine＇s impingement characteristics is very small in these cases.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2011年第1期1-5,共5页
Journal of Beijing University of Aeronautics and Astronautics
关键词
发动机
水滴撞击特性
欧拉法
流量
整流罩
engines
droplets impingement characteristics
Eulerian method
flow rate
cowling
