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流体运动中的非Fourier传热
引用本文:陈国谦,杨志峰,彭仕文.流体运动中的非Fourier传热[J].航空学报,1994,15(4):386-392.
作者姓名:陈国谦  杨志峰  彭仕文
作者单位:北京航空航天大学动力系,北京师范大学环境科学研究所
基金项目:国家自然科学基金,攀登基金
摘    要: 分析了运动流体中非Fourier传热的数理基础。运用特征一次特征方法阐明基本方程组的影响域、决定域等概念及其物理内涵;强调热Mach波的存在。以流动中固定热源问题证明基本关系正确;并给出当流动速度不小于热传播速度时,流汤中发生热激波。

关 键 词:热通量  传热  流体流  

NON-FOURIER HEAT TRANSFER IN FLUID FLOWS
Chen Guoqian.NON-FOURIER HEAT TRANSFER IN FLUID FLOWS[J].Acta Aeronautica et Astronautica Sinica,1994,15(4):386-392.
Authors:Chen Guoqian
Institution:1. Department of Jet Propulsion, Beijing University of Aeronautics and Astronautics,Beijing,100083;2. Institute of Enviromental Sciences,Beijing Normal University.Beijing,100875
Abstract:This paper ls intended to analyze the mathematical physics of the non-Fourier heat transfer in fluid flows. To give the basis for analytical and numerical approaches,the zones of dependence and influence, With their physical implications, of the governing equations are ex-pounded via the viewpoint of characteristics and sub-characteristics.The validitv of the constitutive relation is justified by a fixed-heat-source problem in the flow,and thermal shocks are shown to exist in the flow field when the flow velocity is equal to or faster than the thermal propagation speed of the fluid.
Keywords:heat flux  heat transfer  fluid flow
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