摘要
一、测量原理与方法 使用散斑照相测量加热竖板自然对流温度场的实验装置如图1所示。来自He-Ne激光器LS的光束经过聚焦透镜L1,针孔滤波器Al和准直透镜L2后,以一束准直平行光束通过测试段TS。前置放大透镜L8将测试段成像在毛玻璃GG上。当激光束照射毛玻璃时。
In this paper, laser speckle photography suitable for an investigation in heat transfer of natural 'convection with large surface-to-ambient temperature difference is described. The temperature difference ranges from 17[K] to 360 [K] .The experimental results obtained by speckle photography are in good agreement with numerical results taking the effect of variable property into consideration and the experimental results in existing literature.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
1989年第1期62-65,共4页
Journal of Engineering Thermophysics
基金
国家教委博士点基金
