机场道路碳纤维电热法融雪化冰试验与数值模拟

Experiment and Numerical Simulation of Snow and Ice Melting by Arranging Carbon Fiber Hot-lines on Airport Road

本文为研究机场道路内置单、双层碳纤维发热线的热传导性能,在恒温试验室内制作了道路内置双层碳纤维发热线模型并进行了热传导试验和融冰试验,将热传导试验结果与机场道路内置单层碳纤维发热线模型的热传导试验结果进行对比,研究发现经过加热后内置双层碳纤维发热线模型表面的最高温度达到4.4℃,比单层高出3.2℃,平均温升速率是单层的1.47倍;融冰试验结果表明内置双层碳纤维发热线模型具有良好融雪化冰能力;再利用ANSYS有限元分析软件对机场道路内置单、双层碳纤维发热线的热传导性能进行数值分析,对比分析机场道路内置、双层碳纤维发热线热传导试验结果和有限元分析结果,得到了一种准确的机场道路内置碳纤维发热线传热性能的数值模拟方法;通过试验研究和数值分析,得到了在相同条件下机场道路内置单、双层碳纤维发热线模型各自的温升效果和优缺点,研究结果为机场道路应用碳纤维发热线进行融雪化冰提供了参考。

In order to study the heat conduction performance of the single-and double-layer carbon fiber hot wires on airport road,the model of the double carbon fiber hot wire on the road is made and the heat conduction test is carried out in the constant temperature laboratory.A double-layer carbon fiber heating wire model is made in the constant temperature laboratory,and the heat conduction test and ice melting test are carried out.The results of heat conduction test are compared with that of single-layer carbon fiber heating wire model in airport road.The results show that the highest surface temperature of the model is 4.4℃,3.2℃ higher than that of the single layer;and the average temperature rise rate is 1.47 times of that of the single layer.The ice melting test results show that the built-in double-layer carbon fiber heating wire model has good snow melting and ice melting ability.Then,we use ANSYS software to analyze the thermal conductivity performance about single and double carbon fiber hot-wires on airport road and acquire an accurate numerical simulation method of heat transfer performance of carbon fiber hot-wires on airport road by comparing the results of thermal conductivity test and finite element analysis.Through the experimental research and numerical analysis,the effect of temperature rising,advantages and disadvantages of the single-and double-layer carbon fiber heat-lines models are obtained under the same conditions.The research results provide a reference for the application of carbon fiber hot-wires in snow and ice melting of airport road.