南京航空航天大学学报（英文版）2023，Vol.40Issue(2)：205-215,11.
热气流环境下非球形冰晶的运动换热特性
Dynamic Behavior and Heat Transfer Characteristics of Non-spherical Ice Crystals in High-Temperature Air Flow
摘要
Abstract
This study investigates the dynamic behavior and heat transfer of ice crystals in high-temperature air flow after being ingested by an aero-engine.A numerical model under the Lagrange framework is built to simulate ice crystal motion,heat and mass transfer.Different ice crystal melting models and ice crystals with various shapes and sizes are also compared.The results show that when using the"naked"ice particle model,it takes longer to completely melt compared with the water cover model.It takes 0.04 s for a 20 μm particle to melt,but the melting rate of a"naked"ice particle is faster before 0.023 s.Under the same condition,the liquid water content of a spherical ice crystal is high,and that of a 20 μm spherical one is 49.05％at the outlet.The liquid water contents of ellipsoidal and hexagonal plate ice crystals are close,which are roughly 40％at the outlet.The smaller the size,the earlier the crystals start to melt,and the higher the liquid water content of the crystals.The liquid water content is 60.4％of a 20 μm ice crystal and only 15.5％of a 40 μm one at the outlet.关键词
冰晶/航空发动机/拉格朗日法/传热传质/非球形Key words
ice crystals/aero-engine/Lagrange method/heat and mass transfer/non-spherical分类
航空航天引用本文复制引用
钟富豪,魏震,陈佳军,苗庆硕,郑勉,侯予,刘秀芳..热气流环境下非球形冰晶的运动换热特性[J].南京航空航天大学学报（英文版）,2023,40(2):205-215,11.基金项目
This work was supported by the Key Laboratory of Icing and Anti/De-icing of CARDC(No.IADL 20220107),the National Science and Technology Major Special Funds of China(No.J2019-Ⅲ-0010-0054),and the National Natural Science Foundation of China(No.52076164). （No.IADL 20220107）
