Icing simulation and evaluation of AEDC method
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摘要: 介绍了AEDC(Arnold Engineering Development Center)结冰缩比方法,并对其有效性问题,用数值仿真方法进行了验证.利用结冰仿真计算软件对NACA0012翼型及其1/2和1/3缩比模型、圆柱及其1/2缩比模型进行了结冰数值模拟,内容涉及流场、水滴撞击特性和冰生长计算等.缩比部件的结冰条件由AEDC方法确定.结果表明,翼型、圆柱与其缩比模型的结冰过程具有较好的相似性.说明AEDC方法科学合理,其确定的结冰缩比试验参数有效,同时也说明结冰模拟技术可用于结冰缩比相似性研究.Abstract: The arnold engineering development center (AEDC) icing scaling method was introduced and validated through numerical simulation. By icing modeling software, icing numerical simulations were performed for NACA0012 airfoil and its 1/2 and 1/3 scale models, cylinder and its 1/2 scale model. Flow field, droplets impingement and ice accretion computations were all included in the simulations. Scaling icing conditions were chosen according to AEDC method. The results show that the reference and scaling icing process have a wonderful similarity. It can be concluded that the AEDC method is effective and icing numerical simulation can be used in icing similarity research.
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Key words:
- icing scaling /
- theory of similarity /
- numerical simulation
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