一种改进的积冰试验相似准则及其评估

从影响飞机积冰的基本物理过程出发,基于对AEDC和ONERA准则的分析,给出了一种改进的积冰试验相似准则.利用数值方法对改进的相似准则进行了有效性评估,数值评估的结果表明,用这种相似准则所确定的参数进行数值模拟,可以在圆柱及其1/2缩比模型上的对应区域得到相似的积冰,初步表明笔者所提出的相似准则是有效的,可以应用于冰风洞试验,作为试验的理论指导和参数选取依据.

Modification and evaluation of an icing scaling law

A modified icing scaling law,derived from the basic process of ice accretion on aircraft surface,is proposed in this paper.Numerical method is used for evaluation of the modified icing scaling law.In performing the evaluation,ice accretion on a cylinder is numerically simulated with parameters determined by the scaling law.The computational results show that ice shapes on full-scale cylinder and its sub-scaled model are similar,which illustrates that the law is valid,and it can be used in icing wind tunnel test as the theoretic basis of test and its parameters selection.