过冷大水滴结冰多参数敏感性分析  

Multiparameter Sensitivity Analysis of Supercooled Large Droplet Icing

作　　者：邓甜[1,2] 王嘉琦 刘飞宇 DENG Tian;WANG Jiaqi;LIU Feiyu(Sino-European Institute of Aviation Engineering,Civil Aviation University of China,Tianjin 300300,P.R.China;Key Laboratory of Icing and De-icing,China Aerodynamics Research and Development Center,Mianyang 621000,P.R.China)

机构地区：[1]中国民航大学中欧航空工程师学院,天津300300 [2]中国空气动力研究与发展中心结冰与防除冰重点实验室,绵阳621000

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2023年第4期420-433,共14页南京航空航天大学学报（英文版）

基　　金：supported in part by the Open Fund of Key Laboratory of Icing and Anti/Deicing(No.IADL20200305);the Scientific Research Project of Tianjin Municipal Education Commission(No.2020KJ036)。

摘　　要：过冷大水滴结冰现象对飞机的安全运行造成了严重的威胁。本文采用Sobol序列采样法、径向基函数法、Sobol’s敏感性指数分析法对结冰表面粗糙度、冰密度、有无蒸发、水滴尺寸分布、步长数进行分析,通过单一参数的一阶敏感性指数表征其对冰形参数的影响程度,通过总敏感性指数比较上述参数之间的相互作用对结冰冰形或结冰量的影响。研究发现,翼型前缘冰形特征参数对上述各参数的敏感性存在一致性规律,均受结冰表面粗糙度影响最大,总敏感指数大于0.4761,而受步长数影响最小,约为0.2,其余参数的影响程度从大到小依次为蒸发、水滴尺寸分布和冰密度.The phenomenon of supercooled large droplets(SLD)icing poses a severe threat to the safe operation of aircraft.The Sobol sequence sampling method,radial basis function(RBF)method,and Sobol’s sensitivity index analysis method are used to conduct a multiparameter sensitivity analysis of SLD icing.The influence of four parameters,including icing surface roughness,presence or absence of evaporation,droplet size distribution,and the number of shots,on the shape and amount of icing formation is analyzed.The first-order sensitivity index is used to determine the degree of influence of each parameter on the ice shape parameters,and the total sensitivity index is used to compare the influence of parameter interactions on the ice shape or amount of icing formation.It is found that there is a consistent sensitivity law of the ice shape characteristic parameters of the leading edge of the airfoil to the four parameters,all of which are most affected by the roughness of the icing surface,with a total sensitivity index of more than 0.4761.The number of shots has the least effect,with a total sensitivity index of about 0.2,while the remaining parameters are affected by evaporation,droplet size distribution,in the descending order.

关 键 词：机翼结冰 过冷大水滴 敏感性分析 冰形特征性参数 

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]