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利用动量和热边界层积分分析的方法对采用电热防冰的二维机翼对流换热系数进行了数值计算,比较了等温突捩以及变温光滑两种不同的边界层模型.层流向湍流转捩的起始点位置和过渡区域的长度由经验公式判断,并通过内外热流耦合迭代求解得到了防冰表面的平衡温度,与文献试验值进行了比较.所得结果表明:加入过渡区模型可较好地预测对流换热系数及防冰表面温度.同时,结果还表明环境压力变化对换热系数的的影响较大.
The two-dimensional wing convective heat transfer coefficient using electrothermal anti-icing is numerically calculated by the method of momentum and thermal boundary layer integral analysis, and two different boundary layer models of isothermal buckling and variable temperature smoothing are compared. And the length of the transition region are judged by the empirical formula, and the equilibrium temperature of the anti-icing surface is obtained through iterative internal and external thermal-fluid coupling, which is compared with the experimental data in the literature.The results show that adding the transition region model can better The convective heat transfer coefficient and ice surface temperature are predicted.At the same time, the results also show that the influence of environmental pressure on the heat transfer coefficient is larger.