| 金属热防护系统多层隔热材料的传热分析及参数优化 |
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| 引用本文： | 闫长海,曲寿江,孟松鹤,陈贵清,杜善义,刘国仟.金属热防护系统多层隔热材料的传热分析及参数优化[J].南京航空航天大学学报(英文版),2006,23(4):257-263. |
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| 作者姓名： | 闫长海 曲寿江 孟松鹤 陈贵清 杜善义 刘国仟 |
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| 作者单位： | 哈尔滨工业大学复合材料与结构研究所,哈尔滨,150080,中国 |
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| 摘 要： | 采用能量平衡方程和离散坐标法近似地建立了金属热防护系统多层隔热材料的一维稳态传热的数学模型，并利用遗传算法和纤维隔热材料的有效导热系数试验数据求解传热反问题，从而得到了模型中的纤维隔热材料的辐射衰减系数、反照率和隔热屏表面辐射发射系数。最后，由实验测得了多层隔热材料的有效导热系数，验证了采用优化参数后，多层隔热材料的传热模型的正确性。
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| 关 键 词： | 金属热防护系统 稳态传热 多层隔热材料 遗传算法 |
| 收稿时间： | 04 10 2000 12:00AM |
| 修稿时间： | 08 8 2006 12:00AM |
STEADY HEAT TRANSFER ANALYSIS AND PARAMETER OPTIMIZATION FOR MULTILAYER THERMAL INSULATIONS |
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| Yan Changhai,Qu Shoujiang,Meng Songhe,Cheng Guiqing,Du Shanyi,Liu Guoqian.STEADY HEAT TRANSFER ANALYSIS AND PARAMETER OPTIMIZATION FOR MULTILAYER THERMAL INSULATIONS[J].Transactions of Nanjing University of Aeronautics & Astronautics,2006,23(4):257-263. |
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| Authors: | Yan Changhai Qu Shoujiang Meng Songhe Cheng Guiqing Du Shanyi Liu Guoqian |
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| Institution: | Center for Composite Materials, Harbin Institute of Technology, Harbin, 150080, P. R. China |
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| Abstract: | The energy equilibrium equation and discrete ordinate methods are combined to establish the one-dimensional steady heat transfer mathematical model of multi-layer thermal insulations (MTIs) in metallic thermal protection systems. The inverse problem of heat transfer is solved by the genetic algorithm and data from the steady heat transfer experiment of fibrous thermal insulations. The density radiation attenuation coefficient, the albedo of fibrous thermal insulations and the surface emissivity of reflective screens are optimized. Finally, the one-dimensional steady heat transfer model of MTIs with optimized thermal physical parameters is verified by experimental data of the effective MTI conductivity. |
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| Keywords: | metallic thermal protection system steady heat transfer multilayer thermal insulations genetic algorithm |
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