Fractal analysis of the thermal contact conductance for mechanical interface

被引：16
|
作者：
Wang, Haitong [1 ,2 ]
Liu, Yueming [1 ,2 ]
Cai, Yonglin [1 ,2 ]
Liu, Zonghao [1 ]
Yang, Yuwei [1 ]
机构：
[1] Beijing Jiaotong Univ, 3 Shangyuancun, Beijing 100044, Peoples R China
[2] Minist Educ, Key Lab Vehicle Adv Mfg Measuring & Control Techn, Beijing, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2021年 / 169卷
基金：
中国国家自然科学基金;
关键词：
Thermal contact conductance; Fractal geometry; Mechanical interface; Fluidic thermal interface material; CONFORMING ROUGH SURFACES; JOINT RESISTANCE; MODEL; SIMULATION;
D O I：
10.1016/j.ijheatmasstransfer.2021.120942
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
As the increasing demand for thermal performance of mechanical products, thermal contact conductance (TCC) is widely used in the thermal-mechanical analysis. This paper presents a TCC prediction model based on fractal geometry. Besides the fractal dimension and fractal roughness parameter, the fractal domain area is estimated according to the fractal characteristics of the surface topography. Based on these three fractal parameters, the TCC of the interface with or without fluidic interface material can be calculated. The experimental results show that the fractal model is superior to the TCC models based on GW geometry in accuracy and numerical stability. (C) 2021 Elsevier Ltd. All rights reserved.
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页数：12
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