摘要
依据Mach-Zehnder干涉光路搭建了数字实时激光全息干涉实验台,设计加工了适用于测量二元气体扩散系数的扩散槽本体,详细介绍了根据物光相位的变化计算二元气体扩散系数的测量原理及图像处理方法。在此基础上测量了二元气体对H_2-Air、CH_4-Air和O_2-Air在273.15 K和0.1 MPa下的扩散系数,通过与文献值的比较验证了该实验方法的准确性,为后续二元气体扩散系数测量工作奠定了坚实的基础。
Based on Mach-Zehnder optical interference model, a digital real-time holographic interferometric experimental system was set up. A new diffusion cell specially for measuring binary gas diffusion coefficient was designed and constructed. The experimental theory of measuring binary gas diffusion coefficient and the interference fringe processing method based on difference of object wave＇s phase was introduced in detail. On this base, the diffusion coefficients of H2, CH4 and O2 in air at T=273.15 K and p = 0.1 MPa were measured. By comparing with literature data, the validity of the experimental system was verified, and this laid a solid foundation for the measurement of diffusion coefficient of binary gases in the future.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第3期369-372,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.50676069
No.50836004)
关键词
二元气体扩散系数
激光全息干涉
相位检测
实验方法
binary gas diffusion coefficient
holographic interferometry
phase detection
experimental method
作者简介
何茂刚（1970-），男，河南灵宝人，教授，博士生导师，主要从事流体热物理性质及新型热力循环的研究。
