飞机结冰过程的液/固相变传热研究

Investigation on liquid/solid phase change heat transfer of aircraft icing

基于液/固相变的基本理论,对飞机结冰过程的液/固相变传热特性进行了研究,建立了液膜及冰层生长的分析模型,并采用该模型对来流条件各参数对冰层生长特征及其速率的影响进行了分析.研究表明,在飞机结冰过程中,冰层生长速率及不同冰型的形成不但受来流参数的影响,而且与固、液相区的内部传热特性相关,因而考虑各相区的传热过程是提高冰层生长预测准确性的重要途径.所建模型考虑了液/固相变的非线性特征,对冰层生长速率及冰型特征有着较好的预测作用.

The liquid/solid phase change heat transfer characteristics of aircraft icing were investigated based on the theories of liquid-solid phase change.The analysis model for the growth of film and ice was established and the influence of airflow parameters on the characteristics and rate of icing accretion was analyzed.The results indicate that the accretion rate of icing is not only influenced by the airflow parameters but also influenced by the inner heat transfer of each phase.The heat transfer in solid and ...