电脉冲除冰系统积冰检测的数值仿真与分析

Numerical simulation and analysis of infrared icing detection in electro-impulse de-icing system

为实现防除冰系统一体化,本文提出一种利用低压电脉冲除冰系统作为热激励进行积冰检测的技术,从理论角度论述了基于电路-电磁-传热耦合物理场的原理,并运用有限元数值仿真求解了各物理场状态,得到了积冰表面温度分布状况。同时讨论了设计参数如间距、放电电压、蒙皮厚度这3个参数对积冰表面温度的影响,得出了蒙皮-线圈间距越小、蒙皮厚度越小、放电电压越大,越能有效提高积冰表面温度,可改善积冰检测效果的结论。该方法为防除冰系统一体化设计提供了分析思路。

In order to realize the integration of anti-icing and de-icing system,in this paper,a technology of ice accretion detection using low-voltage electro-impulse de-icing system as thermal excitation is proposed.From a theoretical point of view,this method is based on the principle of circuit electromagnetic heat transfer coupled physical field.The states of each physical field are solved by finite element numerical simulation,and the temperature distribution on the ice surface is obtained.At the same time,the effects of design parameters such as spacing,discharge voltage and skin thickness on the icing surface temperature are discussed.It is concluded that the smaller the skin coil spacing,the smaller the skin thickness and the larger the discharge voltage can effectively improve the icing surface temperature and improve the icing detection effect.This method provides an analytical idea for the integrated design of anti-icing and de-icing system.