摘要
以NACA0012翼型为研究对象,采用拉格朗日法分析了重力对水滴撞击特性的影响,获得了过冷大水滴(SLD)的撞击特性。计算结果表明:当水滴直径超过50μm时,重力对水滴轨迹以及极限轨迹的初始位置影响很大;SLD的水收集系数和收集区域都较直径为10～40μm的水滴(美国联邦航空条例FAR25部附录C规定的防冰系统设计用水滴直径范围)有较大幅度的提高,该结论可为飞机防冰系统的设计以及冰风洞中喷嘴安装位置的确定提供参考。
The influence of gravity on the droplet impingement property were analyzed with the Lagrangian method,and the supercooled large droplet（SLD） impingement property has been gotten based on the re-search of NACA0012 airfoil.Calculation results show that the gravity has great influence on droplet tra-jectory and original position of droplet limiting trajectory when droplet diameter is greater than 50 μm.Comparing with the droplet of 10-40 μm（the diameter range used in anti-icing system is defined by FAR25,Appendix C）,impingement efficiency and water collection area of SLD make a great increment.The conclusions have references value for the design of aircraft anti-icing system and the installation posi-tion of the nozzles in icing wind tunnel.
出处
《燃气涡轮试验与研究》
2010年第3期42-45,26,共5页
Gas Turbine Experiment and Research
基金
国家自然科学基金资助项目(10772118)
关键词
过冷大水滴(SLD)
水滴撞击特性
飞机防冰
冰风洞
supercooled large droplet（SLD）
droplet impingement property
aircraft anti-icing
icing wind tunnel
