应用数学和力学2024，Vol.45Issue(3)：337-347,11.DOI:10.21656/1000-0887.440183
水滴撞击倾斜非Newton除冰液液膜动力学行为特性数值研究
Numerical Study on Dynamic Behavior Characteristics of Water Droplets Hitting Inclined Non-Newtonian Deicing Liquid Films
摘要
Abstract
To investigate the non-Newtonian dynamic behavior of water droplets hitting deicing fluid films un-der rainy weather conditions,the phase interface control equation was coupled with the component transport e-quation to construct a dynamic behavior model for multi-phase,multi-component and multi-system coupling ac-tions of droplets hitting non-Newtonian liquid films.The non-steady-state evolution characteristics of water droplets hitting deicing fluid films were numerically studied,and the model was validated and modified based on experimental results.Furthermore,the influence mechanisms of shear-thinning characteristics of the deicing fluid and slope gradients on the impact process were further analyzed.The results indicate that,an asymmetric liquid crown will form after a droplet impacts the inclined liquid film.The viscosity disparity resulting from the non-Newtonian characteristics of the deicing liquid further contributes to the asymmetrical motion following the impact.During the formation of the liquid crown,the deicing liquid is taken away from the film,and the dilu-tion effect of water reduces the film viscosity.Increasing the slope restricts the upstream range of water drop-lets,facilitating the growth of the downstream liquid crown and accelerating the deicing of the film.Conse-quently,the viscosity of the downstream liquid film significantly decreases.关键词
除冰液/剪切稀化/组分输运/坡度Key words
deicing liquid/shear thinning/component transport/slope分类
力学引用本文复制引用
崔静,岳茂昌,牛书鑫,杨广峰..水滴撞击倾斜非Newton除冰液液膜动力学行为特性数值研究[J].应用数学和力学,2024,45(3):337-347,11.基金项目
国家自然科学基金(面上项目)(52076212) （面上项目）
天津市研究生科研创新项目(2022SKYZ359) （2022SKYZ359）
