摘要
详细地介绍了激光散斑照相技术在对流换热研究中的应用。给出了适用于该研究的６种不同的激光散斑照相实验系统和两种散斑图的再现方法。描述了利用激光散斑照相测量两维温度场与轴对称温度场的基本原理和实验数据定量处理的数学表达式．最后探讨了考虑流场的三维特性后，如何利用激光散斑照相技术测量传热表面的热流量。
This paper presents the application of laser speckle photography in the study of convective heat transfer. Six kinds of experimental systems of recording the specklegram and two methods of reconstruction of the specklegram for the study of convective heat transfer are proposed. Second,. the measurement principles and the formulas of experimental data processing are then discussed for the determination of two dimensional and axisymrpetric temperature fields. Finally, when a three dimensional characteristic of flow field that results from the edge effect must be taken into account, the principles of measuring heat flux of the heat surface are described.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1989年第2期11-19,共9页
Journal of Tsinghua University(Science and Technology)
关键词
激光
散斑
照相
对流
换热
温度
laser, speckle, optical measurement, convective heat transfer, temperature measurement
