【摘要】 介绍了利用瞬态脉冲法原理测量双层薄同心圆筒壁间接触热阻的实验技术和装置。建立了用于实验参数估计的数学模型。分析讨论了实验系统传热的特点 ,确定了实验所需的热绝缘垫圈的厚度。通过实验研究 ,测量确定了一组双层薄同心圆筒试样的接触热阻更多还原

【Abstract】 The flash method extended to measure the contact thermal resistance between the walls of two thin concentric cylinders is introduced in this paper. A mathematical model for estimating experimental parameters has been established. A numerical analysis by the finite element method has been carried out for determining the adaptive thickness of the insulation washer. The contact thermal resistance of several samples measured by this method has been reported in this paper. It is shown that the method can be used to determine the contact thermal resistance of the order of 10 -6 10 -4 m 2·℃/W更多还原