2种进气畸变流道结构对航空发动机进口流场的影响  

Influence of Two Distortion Channel Configurations on Aeroengine Inlet Flow Filed

作　　者：芮长胜[1] 谷君[1] 邱明星[1] 王传宝[1] 

机构地区：[1]中航工业沈阳发动机设计研究所,沈阳110015

出　　处：《航空发动机》2013年第5期42-46,共5页Aeroengine

摘　　要：基于某型航空发动机插板式进气总压畸变试验,重点分析了进气段采用收敛形和直线形2种进气流道结构对发动机进口总压畸变流场的影响,并对3维数值模拟结果进行了研究。结果表明:在收敛形进气流道结构下,当插板相对插入深度大于45%后,发动机进口总压畸变流场稳态周向畸变指数逐渐减小,且随插板深度增加,发动机进口畸变流场逐渐趋向均匀;直线形进气流道结构在插板深度逐渐增加时,进口畸变指数平稳增大,流场不均匀性增强,能较好地表征发动机进口畸变流场形态。Based on an engine inlet total-pressure distortion experiment in an inserted-board, the influence of convergent and straight inlet channel configurations on the engine inlet total pressure distorted flow field was analyzed, and 3-D nmnerical simulation was studied. The results show that engine inlet steady circumferential total pressure distortion descriptor declines when inserted-board inserting depth is greater than 45% in the convergent channel configuration, and engine inlet flow field becomes uniform with further increasing inserted- board depth. Engine inlet distortion descriptor increases steadily and Flow field in inhomogeneous enhancement in the straight channel configuration. The engine inlet distorted flow field is characterized better with straight channel configuration.

关 键 词：总压畸变 流道结构 畸变指数 畸变流场 航空发动机 

分 类 号：V23[航空宇航科学与技术—航空宇航推进理论与工程]