Thermal contact conductance model of rough surfaces with inclination based on three-dimensional fractal theory

IF 1.2 4区工程技术 Q3 ENGINEERING, AEROSPACE Aircraft Engineering and Aerospace Technology Pub Date : 2024-01-01 DOI:10.1108/aeat-02-2023-0054

Xianguang Sun

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Abstract

Purpose

The purpose of this study is to establish a thermal contact conductance model of rough surfaces with inclination based on three-dimensional fractal theory.

Design/methodology/approach

The effects of contact load, inclination angle, fractal dimensional and fractal roughness on thermal contact conductance of rough surfaces were studied using numerical simulation.

Findings

The results show that the thermal contact conductance of the rough surface increases with the increase of contact load and fractal dimension and decreases with the increase of fractal roughness and inclination angle. The inclination angle of the rough surface has an important influence on the thermal contact conductance of the rough, and it is a factor that cannot be ignored in the study of the thermal contact conductance of rough surfaces.

Originality/value

A thermal contact conductance model of rough surfaces with inclination based on three-dimensional fractal theory was established in this study. The achievements of this study provide some theoretical basis for the investigation of the thermal contact conductance of rough surfaces.

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基于三维分形理论的倾斜粗糙表面热接触传导模型

研究结果表明，粗糙表面的热接触电导率随接触载荷和分形尺寸的增加而增加，随分形粗糙度和倾角的增加而减小。粗糙表面的倾角对粗糙表面的热接触传导率有重要影响，是研究粗糙表面热接触传导率不可忽视的因素。本研究的成果为研究粗糙表面的热接触传导提供了一定的理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aircraft Engineering and Aerospace Technology 工程技术-工程：宇航

CiteScore

3.20

自引率

13.30%

发文量

168

审稿时长

8 months

期刊介绍： Aircraft Engineering and Aerospace Technology provides a broad coverage of the materials and techniques employed in the aircraft and aerospace industry. Its international perspectives allow readers to keep up to date with current thinking and developments in critical areas such as coping with increasingly overcrowded airways, the development of new materials, recent breakthroughs in navigation technology - and more.