论文:2016,Vol:34,Issue(5):739-746
引用本文:
桑为民, 贾韫泽, 鲁天. 水滴撞击飞溅效应对过冷大水滴结冰影响研究[J]. 西北工业大学学报
Sang Weimin, Jia Yunze, Lu Tian. Numerical Analysis of Splashing for Icing Effects at Supercooled Large Droplet Impingement[J]. Northwestern polytechnical university

水滴撞击飞溅效应对过冷大水滴结冰影响研究
桑为民1, 贾韫泽1, 鲁天2
1. 西北工业大学 航空学院, 陕西 西安 710072;
2. 中国飞行试验研究院 飞行部, 陕西 西安 710089
摘要:
过冷大水滴(SLD)结冰的结冰量较大、位置靠后且容易形成复杂冰型,对飞机气动性能和飞行安全具有更大危害性。在结冰过程数值模拟的基础上,针对SLD条件下水滴撞击的飞溅效应及其对成冰过程影响进行研究。采用结构化网格和中心有限体积法求解N-S方程获得空气流场,运用拉格朗日法求解水滴流场,基于改进的Messinger热力学模型进行翼面结冰模拟。对SLD结冰,采用飞溅碰撞模型,分析了水滴飞溅现象及其对SLD结冰过程的影响,完成了典型翼型结冰算例的数值模拟和分析讨论,与参考文献和试验结果的对比,说明了文中计算模型及计算方法在模拟SLD结冰的撞击飞溅效应时是可行和正确的,获得的影响规律和结论对于深入研究SLD结冰具有重要的参考价值。
关键词:    飞机结冰    过冷大水滴    水滴飞溅    拉格朗日方法    N-S方程   
Numerical Analysis of Splashing for Icing Effects at Supercooled Large Droplet Impingement
Sang Weimin1, Jia Yunze1, Lu Tian2
1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. Institute of Flight, Chinese Flight Test Establishment, Xi'an 710089, China
Abstract:
The icing with Supercooled Large Droplet (SLD) can form the complex ice shape and may result in the extremely severe performance degradation to hazard the flight safety. Research objectives in this paper are to master and reveal the icing effects of droplets splashing under SLD conditions. A numerical solver is developed to analyze the ice accretion, which include the centered finite volume method for solving the N-S equations to get the air flow field, and the Lagrangian method for predicting the flow field of droplets, and a revised Messinger model for simulating the thermodynamic process of icing. Two different splashing models are presented to investigate the splashing phenomenon and droplet impingement. Using the above methods, we complete the numerical simulation of ice accretion and icing effects of droplets splashing over the NACA 0012 airfoil. The calculation results are in good agreement with experimental data, indicating that the methods are feasible and effective. The investigation has important engineering application value for the SLD icing prediction.
Key words:    angle of attack    drops    flow fields    flow velocity    turbulence models    aircraft icing    supercooled large droplet    droplets splashing    Lagrangian method    N-S equations   
收稿日期: 2016-03-02     修回日期:
DOI:
基金项目: 国家自然科学基金(11072201)及航空科学基金(2015ZA53007)资助
通讯作者:     Email:
作者简介: 桑为民(1974-),西北工业大学教授,主要从事空气动力学和计算流体力学研究。
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