Numerical Study on Dynamic Behavior Characteristics of Water Droplets Hitting Inclined Non-Newtonian Deicing Liquid Films

CUI Jing; YUE Maochang; NIU Shuxin; YANG Guangfeng

doi:10.21656/1000-0887.440183

Volume 45 Issue 3

Mar. 2024

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Article Navigation > Applied Mathematics and Mechanics > 2024 > 45(3): 337-347

CUI Jing, YUE Maochang, NIU Shuxin, YANG Guangfeng. Numerical Study on Dynamic Behavior Characteristics of Water Droplets Hitting Inclined Non-Newtonian Deicing Liquid Films[J]. Applied Mathematics and Mechanics, 2024, 45(3): 337-347. doi: 10.21656/1000-0887.440183

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Numerical Study on Dynamic Behavior Characteristics of Water Droplets Hitting Inclined Non-Newtonian Deicing Liquid Films

doi: 10.21656/1000-0887.440183

College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, P.R.China

Received Date: 2023-06-16
Rev Recd Date: 2023-11-13
Publish Date: 2024-03-01

Abstract

Abstract

To investigate the non-Newtonian dynamic behavior of water droplets hitting deicing fluid films under rainy weather conditions, the phase interface control equation was coupled with the component transport equation to construct a dynamic behavior model for multi-phase, multi-component and multi-system coupling actions 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 dilution effect of water reduces the film viscosity. Increasing the slope restricts the upstream range of water droplets, facilitating the growth of the downstream liquid crown and accelerating the deicing of the film. Consequently, the viscosity of the downstream liquid film significantly decreases.
- deicing liquid,
- shear thinning,
- component transport,
- slope

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References(26)

References

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