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机翼电加热防冰表面内外传热的耦合计算
引用本文:卜雪琴,林贵平,郁嘉. 机翼电加热防冰表面内外传热的耦合计算[J]. 航空动力学报, 2010, 25(7): 1491-1496
作者姓名:卜雪琴  林贵平  郁嘉
作者单位:北京航空航天大学航空科学与工程学院,北京,100191;北京航空航天大学航空科学与工程学院,北京,100191;北京航空航天大学航空科学与工程学院,北京,100191
摘    要:分析了机翼防冰表面的传热传质现象,对电加热防冰表面内外传热耦合计算进行了研究.采用附面层积分法对机翼表面传热系数进行计算.根据传热传质比拟得到了防冰表面蒸发量.建立表面微元的能量与质量守恒差分方程组,利用高斯-赛德尔迭代法求解,将外部防冰载荷、蒙皮弦向导热和内部加热热流三者耦合,采用亚松弛系数稳定迭代过程,最后得到平衡表面温度、溢流水和溢流结冰的范围.计算结果和文献中试验以及其他数值仿真结果比较,吻合较好,表明了模型及计算方法的正确性. 

关 键 词:防冰  机翼  传热传质  表面传热系数  耦合传热  表面温度
收稿时间:2009-05-25
修稿时间:2009-10-20

Coupled heat transfer calculation on an airfoil electrothermal anti-icing surface
BU Xue-qin,LIN Gui-ping and YU Jia. Coupled heat transfer calculation on an airfoil electrothermal anti-icing surface[J]. Journal of Aerospace Power, 2010, 25(7): 1491-1496
Authors:BU Xue-qin  LIN Gui-ping  YU Jia
Affiliation:School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
Abstract:The phenomenon of heat and mass transfer on an anti-icing surface was analyzed,and the calculation of internal-external coupled heat transfer was studied in this paper.The evaporation mass flux was evaluated according to the heat and mass transfer analogy.The skin surface was discrete,and the finite difference equations of the energy and mass conservation were developed,enabling to couple the external heat loads,thermal conduction within the skin and the internal heat flux.The energy finite difference equations were solved by Gauss-Seidel iteration method.The coupled heat transfer calculation was an iteration process triggered with an initial surface temperature and maintained by under-relaxation factors.The surface equilibrium temperature,runback water and runback icing were obtained after convergence.The numerical results in this paper were compared with the icing tunnel experimental data and numerical results from reliable literatures,showing good agreement with them.
Keywords:anti-icing   airfoil   heat and mass transfer   heat transfer coefficient   coupled heat transfer   surface temperature
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