冰的导热系数测量方法的研究和计算模拟

Research and Computational Simulation of Measurement Methods for Thermal Conductivity of Ice

基于常用的通过“热传导”过程测量导热系数的稳态法,从逆向思维出发,推导和设计了适用于测量受热易融化的低温不良导热体的导热系数的“冷传导”方法,并且,通过实验和计算模拟验证了这种方法的可行性。利用COMSOL多物理场仿真软件计算和分析了待测冰样品的厚度、隔热层和待测冰样品的形状等对冰的导热系数测量的影响。

Based on the commonly used steady-state method of measuring thermal conductivity through the “heat conduction” process, a “cold conduction” method suitable for measuring the thermal conductivity of low-temperature poor thermal conductivity materials that are easily melted by heating was derived and designed from reverse thinking. The feasibility of this method was verified through experiments and computational simulations. The influence of the thickness, insulation layer, and shape of the ice sample to be measured on the thermal conductivity measurement of ice was calculated and analyzed using COMSOL multi-physical field simulation software.