摘要
对样品／薄夹层／窗口组成的三层介质双界面热传导问题进行求解。在三个不同初温、不同热物性参数及边界条件下，获得了夹层介质中的温度解，给出了界面温度历史随薄层厚度、热扩散系数和介质之间热扩散系数之比的变化规律。从理论分析和实验结果发现，当夹层厚度小于１μｍ，热扩散系数大于１０－４ｍ２／ｓ时，在实验观测的时间内，界面温度历史将很快衰减到一平台，其幅度只由样品、窗口的初温和热扩散系数确定，而与夹层介质的初温。
The thermal conduction problem of two interfaces for a sample/thin layer/window configuration is solved for different initial temperature distribution,material thermal properties and different boundary conditions.Results reveal that the interface temperature history decreases sharply at first then approaches to a plateau within the observational time if the thickness of the thin layer is very small (less than 1mm)and the thermal diffusion coefficient is very large (greater than 10 -4 m 2/s).The amplitude of the temperature plateau depends on the initial temperature and the thermal diffusion coefficients of the sample or the window,does not relate to those of the thin layer.
出处
《高压物理学报》
EI
CAS
CSCD
北大核心
1997年第1期8-12,共5页
Chinese Journal of High Pressure Physics
基金
中国工程物理研究院科学基金
关键词
冲击温度测量
界面温度
热弛豫
冲击波
shock temperature measurement,interface temperature,thermal relaxation.
