中国科学院大学学报2018，Vol.35Issue(2)：216-221,6.DOI:10.7523/j.issn.2095-6134.2018.02.010
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
摘要
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.关键词
纳米复合隔热材料/等效导热系数/辨识/高温实验Key words
nanocomposite thermal insulation/effective thermal conductivity/inverse identification/high temperature experiment分类
能源科技引用本文复制引用
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):216-221,6.基金项目
国家自然科学基金(51536001,51676055)资助 （51536001,51676055）
