基于差分进化算法的复合材料电热防冰系统功率分布优化方法OA

Carbon fiber composites have the characteristics of high specific modulus and high specific strength.Under the development trend of lightweight and low energy consumption of aircraft,the electrothermal anti-icing system based on carbon fiber composites has a wide application prospect.To reduce the power consumption of the electro-thermal anti-icing system of carbon fiber composites,an optimization method of electrothermal power distribution based on differential evolution algorithm is proposed for the carbon fiber composite skin with anisotropic thermal con-ductivity characteristics.The coordinate transformation method is introduced to calculate the anisotropic heat conduc-tion process in the carbon fiber composite airfoil skin,and an analytical model of the electrothermal anti-icing system coupled with anisotropic heat conduction and runback water model of carbon fiber composite is established.An optimi-zation framework based on the differential evolution algorithm and the coupled electrothermal anti-icing model is estab-lished to realize the optimization process of the power distribution of the electrothermal anti-icing system.The optimiza-tion results for the electrothermal anti-icing system with multi-layer structure show that the optimization framework can optimize the power distribution of the electrothermal anti-icing system.When icing conditions are the same,the opti-mized power consumption required to ensure anti-icing performance is reduced by 8%.In the power distribution design of an electrothermal anti-icing system,to ensure anti-icing performance while minimizing energy consumption,the power distribution can be adjusted by lowering the surface temperature in areas with high convective heat transfer coef-ficients to reduce heat loss,while raising the surface temperature in areas with low convective heat transfer coefficients to ensure sufficient evaporation of impinging water.