纳米复合隔热材料高温等效导热系数辨识方法

doi:10.7523/j.issn.2095-6134.2018.02.010

中国科学院大学学报 ›› 2018, Vol. 35 ›› Issue (2): 216-221.DOI: 10.7523/j.issn.2095-6134.2018.02.010

• 中国工程热物理学会2016年传热年会专栏 • 上一篇下一篇

纳米复合隔热材料高温等效导热系数辨识方法

刘华¹, 解向前², 金子程¹, 夏新林¹, 艾青¹, 李东辉¹

1. 哈尔滨工业大学能源科学与工程学院, 哈尔滨 150001;
2. 北京临近空间飞行器系统工程研究所空间物理重点实验室, 北京 100076

收稿日期:2017-04-19 修回日期:2017-06-15 发布日期:2018-03-15
通讯作者: 夏新林, 艾青
基金资助:
国家自然科学基金（51536001，51676055）资助

Inverse method for retrieving high-temperature effective thermal conductivity of nanocomposite thermal insulation

LIU Hua¹, XIE Xiangqian², JIN Zicheng¹, XIA Xinlin¹, AI Qing¹, LI Donghui¹

1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
2. Science and Technology on Space Physics Laboratory, Beijing Institute of Nearspace Vehicle's Systems Engineering, Beijing 100076, China

Received:2017-04-19 Revised:2017-06-15 Published:2018-03-15

摘要/Abstract

摘要： 搭建高温瞬态热特性实验装置，测量获取某纳米复合隔热材料在290~1 090 K温度范围内的高温瞬态热特性数据。基于辐射与导热耦合传热模型和群体智能优化的遗传算法，建立随温度变化等效导热系数的辨识模型。通过数值实验验证了辨识模型的可靠性。结合真实实验测量所得高温瞬态热特性数据，辨识获取材料在290~1 090 K温度范围内的等效导热系数，介于0.027~0.043 W/（m ·K），随温度升高呈非线性上升趋势。

关键词: 纳米复合隔热材料, 等效导热系数, 辨识, 高温实验

Abstract: An experimental apparatus was built to measure transient thermal characteristics of nanocomposite thermal insulation within a temperature range between 290 and 1 090 K. An inverse method was developed to retrieve the temperature-dependent effective thermal conductivity based on transient temperature measurements. It was achieved by combining a forward model for solving combined conduction and radiation and an optimization method based on genetic algorithm (GA). The method was validated by numerical experiments. The temperature-dependent effective thermal conductivities of nanocomposite thermal insulation at normal pressure were retrieved by solving the inverse method. The retrieved value increased from 0.027 to 0.043 W/(m·K) as temperature increased from 290 to 1 090 K.

Key words: nanocomposite thermal insulation, effective thermal conductivity, inverse identification, high temperature experiment

中图分类号:

TK124

刘华, 解向前, 金子程, 夏新林, 艾青, 李东辉. 纳米复合隔热材料高温等效导热系数辨识方法[J]. 中国科学院大学学报, 2018, 35(2): 216-221.

LIU Hua, XIE Xiangqian, JIN Zicheng, XIA Xinlin, AI Qing, LI Donghui. Inverse method for retrieving high-temperature effective thermal conductivity of nanocomposite thermal insulation[J]. , 2018, 35(2): 216-221.

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纳米复合隔热材料高温等效导热系数辨识方法

Inverse method for retrieving high-temperature effective thermal conductivity of nanocomposite thermal insulation

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