水滴撞击非牛顿除冰液液膜动力学行为特性数值研究OACSCDCSTPCD
Numerical Study on Dynamic Behavior of Non-Newtonian De-icing Liquid Film Impacted by Water Droplets
冻雨天气下,过冷大水滴撞击到除冰液液膜后会发生溅射、铺展、互溶等物理过程,除冰液液膜温度降低、浓度下降,液膜冰点上升、黏度下降,引发液膜滑落脱离,大幅缩短防冰保持时间.本文针对冻雨天气下飞机除冰液液膜失效行为开展数值研究,基于流体体积法,并结合组分输运方程,构建了多相、多组分、多体系、多场耦合的水滴撞击非牛顿除冰液液膜的动力学行为模型.基于该数值模型,研究了水滴撞击非稳态过程的动力学行为以及液膜的稀释、降粘等非牛顿流变特性.研究表明:液膜初始浓度…查看全部>>
In freezing rainy weather,physical processes,such as sputtering,spreading,and miscibility,will occur after the supercooled large water droplets hit the liquid film of the de-icing liquid,the temperature and concentration of the liquid film of the de-icing liquid will decrease,the freezing point of the liquid film will rise and the viscosity will decrease,causing the liquid film to slide and detach and greatly shortening the anti-icing holding time.Based on t…查看全部>>
崔静;岳茂昌;姜德政;常义浩;杨广峰
中国民航大学航空工程学院,天津 300300, 中国中国民航大学航空工程学院,天津 300300, 中国中国民航大学航空工程学院,天津 300300, 中国中国民航大学航空工程学院,天津 300300, 中国中国民航大学航空工程学院,天津 300300, 中国
力学
除冰液液膜多相多体系非牛顿剪切稀释组分迁移
de-icing liquid filmmultiphase and multi systemnon-Newtonianshear dilutioncomponent migration
《南京航空航天大学学报（英文版）》 2023 (z1)
13-28,16
This work was supported in part by the National Natural Science Foundation of China(No.52076212),and the Tianjin Research Innovation Project for Postgraduate Students(No.2022SKYZ359).The authors re-alize that the time and space available for a review of such an ambitious subject are limited and,thus,regretfully,we are unable to cover many important contributions.The authors would like to acknowledge the following people for their as-sistance:NIU Shuxin,LI Hongwei,WANG Chengxuan,all with the Laboratory of Aircraft ice and frost suppression,Civil Aviation University of China.
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