| 谭燕.基于欧拉方法的2 维翼型冰晶结冰数值计算[J].航空发动机,2020,46(4):30-35 |
| 基于欧拉方法的2 维翼型冰晶结冰数值计算 |
| Numerical Calculation of 2D Airfoil Ice Crystal Icing Based on Euler Method |
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| DOI： |
| 中文关键词: 防冰设计 冰晶 结冰 数值模拟 航空发动机 |
| 英文关键词:anti-icing design ice crystal icing numerical simulation aeroengine |
| 基金项目:2018 年四川省教育厅自然科学一般项目（18ZB0684）资助 |
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| 中文摘要: |
| 针对现有航空发动机冰晶结冰试验方法存在数据采集困难，且难以揭示冰晶结冰机理问题，对某楔形翼型进行冰晶结
冰数值计算。采用S-A 湍流模型获得流场结果，应用欧拉方法获得冰晶和液滴轨迹结果，基于Messinger 模型获得冰形，并以
NASA-NRC 的第139 号试验结果验证了数值方法的可行性。结果表明：在其他工况相同时，压力越低（飞行高度越高），冰晶/ 液滴蒸
发越强烈，结冰情况越严重；分析不同液态水含量与总水含量比例（CLW/CTW）对结冰的影响可知，液态水过少或过多都不利于冰层形成。 |
| 英文摘要: |
| In view of the difficulty to date collect and reveale the mechanism of ice crystal icing in the existing ice crystal icing test
methods of aeroengine，the ice crystal icing numerical calculation of a wedge airfoil was carried out. The result of flow field was obtained by
Spalart-Allmaras turbulence model. The results of the trajectory of ice crystal and droplets were obtained by Euler method. The ice shape
was obtained by Messinger model，and the feasibility of the numerical method was verified by NASA-NRC test result （No.139）. The results
show that the lower the pressure（the higher the flight altitude），the stronger the evaporation of ice crystals/droplets and the more serious the
icing is when other working conditions are the same. It can be seen from the analysis of the effect of different ratio of CLW/CTW on icing that
too little or too much liquid water is not conducive to icing. |
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