空气动力学学报2012，Vol.30Issue(4)：551-556,6.
冰脱落对电热除冰传热特性的影响研究
Study on effect of ice shedding on heat transfer characteristics of electrothermal aircraft deicing
摘要
Abstract
The effect of ice shedding on heat transfer characteristics is one of the important aspects of e-lectrothermal aircraft deicing. Based on the enthalpy method, the traditional phase-change model is applied to the simulation of aircraft electrothermal deicing with a finite volume method on hybrid grids. The effects of ice shedding on heat transfer characteristics are studied, including the effects of heating manner and the heater gap width of deicing structure. The numerical results demonstrate that deicer without gap is a special case of those with gaps. The skin surface temperature history is essentially similar. After ice shedding, the skin surface temperature of deicer without gap increases dramatically at the early stage, and then the increasing speed slows down gradually. For the deicer with gaps, the temperature increment gradually relaxes with the heating power density in the gap decreasing. When the heating power density decreases to a certain value, the temperature drop will occur. If the difference between the heat flux delivered to the skin surface and the removed heat flux from convection tends to be constant gradually, the skin surface temperature will rise up slowly.关键词
电热除冰/传热特性/冰脱落/单元间隔/热焓法Key words
electrothermal deicing/heat transfer characteristic/ice shedding/heater gap width/enthalpy method分类
航空航天引用本文复制引用
肖春华,林贵平,桂业伟,肖京平..冰脱落对电热除冰传热特性的影响研究[J].空气动力学学报,2012,30(4):551-556,6.基金项目
国家自然科学基金委员会与中国民用航空局联合资助项目(61179075) （61179075）
