| 非傅立叶热现象的理论分析和实验证实 |
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| 引用本文： | 蒋方明,刘登瀛,蔡睿贤.非傅立叶热现象的理论分析和实验证实[J].中国化学工程学报,2001,9(4):359-366. |
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| 作者姓名： | 蒋方明 刘登瀛 蔡睿贤 |
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| 作者单位： | InstituteofEngineeringThermophysics,ChineseAcademyofSciences,P.O.Box2706,Beijing1000801China |
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| 基金项目： | Supported by the Chinese Academy of Sciences (No. KJ 951-B1-704), the National Natural Science Foundation of China (No. 59736130) and the State Key Fundamental Research Plan of China (No. G2000026305). |
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| 摘 要： | This paper consists of two parts. (1) For a hollow sphere with sudden temperature changes on its inner and outer surfaces, the hyperbolic heat conduction equation is employed to describe this extreme thermal case and an analytical expression of its temperature distribution is obtained. According to the expression, the non-Fourier heat conduction behavior that will appear in the hollow sphere is studied and some qualitative conditions that will result in distinct non-Fourier behavior in the medium is ultimately attained. (2) A novel experiment to observe non-Fourier heat conduction behavior in porous material (mainly ordinary duplicating paper) heated by a microsecond laser pulse is presented. The conditions for observing distinct non-Fourier heat conduction behavior in the experimental sample agree well with the theoretical results qualitatively.
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| 关 键 词： | 非傅立叶热现象 理论分析 实验研究 双曲线热传导 热波 化工热力学 |
| 修稿时间： | |
Theoretical Analysis and Experimental Evidence of Non-Fourier Heat Conduction Behavior |
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| JIANG Fangming,LIU Dengying,CAI Ruixian.Theoretical Analysis and Experimental Evidence of Non-Fourier Heat Conduction Behavior[J].Chinese Journal of Chemical Engineering,2001,9(4):359-366. |
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| Authors: | JIANG Fangming LIU Dengying CAI Ruixian |
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| Affiliation: | Institute of Engineering Thermophysics, Chinese Academy of Sciences, P.O.Box2706, Beijing 1000801 China |
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| Abstract: | This paper consists of two parts. (1) For a hollow sphere with sudden temperature changes on its inner and outer surfaces, the hyperbolic heat conduction equation is employed to describe this extreme thermal case and an analytical expression of its temperature distribution is obtained. According to the expression, the non-Fourier heat conduction behavior that will appear in the hollow sphere is studied and some qualitative conditions that will result in distinct non-Fourier behavior in the medium is ultimately attained. (2) A novel experiment to observe non-Fourier heat conduction behavior in porous material (mainly ordinary duplicating paper) heated by a microsecond laser pulse is presented. The conditions for observing distinct non-Fourier heat conduction behavior in the experimental sample agree well with the theoretical results qualitatively. |
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| Keywords: | non-Fourier heat conduction hyperbolic heat conduction thermal wave |
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