地效飞行器大迎角近地面飞行分离流动数值研究  

Numerical Research on Separated Flow Around a WIG Craft in Flight Close to Ground at High Incidence Angle

作　　者：屈秋林[1] 刘沛清[1] 秦绪国[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083

出　　处：《航空学报》2007年第1期72-77,共6页Acta Aeronautica et Astronautica Sinica

基　　金：航空支撑科技基金(04A51005)

摘　　要：利用Fluent软件求解定常可压缩流动的质量加权平均N-S方程和标准k-ε湍流模型,数值模拟地效飞行器大迎角近地面飞行的全机流场,研究地面效应引起的分离流动。研究结果给出了大迎角近地面飞行机翼上翼面分离流动随飞行高度的变化规律,分析了飞行高度降低引发流动分离的原因,阐述了流动分离对气动性能的影响规律。Numerical results are presented by simulating the separated flow around a WIG craft in flight close to ground at a high incidence angle. The Farve-averaged N-S equation of steady compressible flow and the standard κ-ε turbulence model are solved by Fluent software. The effects of flight height on the separated flow around wings of WIG craft are provided. Why flow separates at lower flight height is explained. The effects of the separated flow on aerodynamics of WIG craft are analyzed in detail.

关 键 词：地效飞行器 分离流动 数值模拟 气动性能 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]