A dynamic optical measurement system for cryogenic fluids using laser interferometry

[摘要] Dynamic visualization is of great significance in the research of flow conditions and mass transfer process of cryogenic fluids. In this paper, two common ways to measure the concentration of cryogenic fluids are introduced and compared. To improve the real-time monitoring of cryogenic fluid, a non-contact dynamic optical measurement system using laser interferometry is designed, which is sensitive to subtle changes of fluid concentration. A precise and dynamic interference pattern can be obtained using this system. Two-dimensional concentration distribution of the fluid can be calculated from the interference pattern. Detailed calculation process is presented in the paper.

[发布机构] Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou; 310027, China^1;Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province, Hangzhou; 310027, China^2

[效力级别] 物理学 [学科分类] 材料科学（综合）

[关键词] Concentration distributions;Dynamic visualization;Fluid concentration;Interference patterns;Mass transfer process;Non-contact dynamics;Optical measurement systems;Real time monitoring