摘要
本文首先对数字全息干涉术中的数字图像处理理论以及数字全息干涉法实验原理作了详细研究。在此基础上,对数字图像处理中全息图的预处理、全息图像的频域滤波、数字干涉条纹再现等关键技术做了详细阐述。自行设计和搭建了数字全息干涉法流体质扩散系数测量实验台。以0.33 mol·L^(-1)的氯化钾溶液-水的扩散体系作为标准物质,测量了其质扩散系数。结果显示,与文献数据比较测量相对偏差绝对平均值为1.30%,验证了实验台的可靠性。
In this paper,we first introduce the theory of digital image holographic interferometry system in detail.On this basis,the key techniques of digital image processing such as preprocessing of hologram,frequency domain filtering of the digital image and interference fringes rebuilding are introduced.An experimental system based on digital image holographic interferometry and a novel diffusion cell are designed and constructed for the measurement of mass diffusion coefficients.The mass diffusion coefficients of KC1 in aqueous solution at condensation 0.33 mol.L^(-1) were measured to verify the accuracy and reliability of the system.The measurement results show that the absolute average of relative deviations is 1.30% compared with the literature values.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2007年第z1期69-72,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金项目资助(No.50676069
No.50521604)
教育部"新世纪优秀人才支持计划项目(No.NCET-04-0925)
关键词
数字全息干涉法
质扩散系数
氯化钾
digital image holographic interferometry
mass diffusion coefficients
KC1
