数字全息法测量CO_2在RP-3燃油中的扩散系数  

Measurement of diffusion coefficient of CO_2 in RP-3 jet fuel by digital image holography

作　　者：李超越[1] 冯诗愚[1] 邵垒[1] 潘俊[2] 刘卫华[1] 

机构地区：[1]南京航空航天大学航空宇航学院,南京210016 [2]中航工业南京机电液压工程研究中心航空机电系统综合航空科技重点实验室,南京211106

出　　处：《航空学报》2017年第12期126-132,共7页Acta Aeronautica et Astronautica Sinica

基　　金：航空科学基金(20132852040);江苏省研究生科研与实践创新计划(KYCX17_0279);中航工业技术创新基金基础研究类(2014D60931R);民用飞机专项科研经费([2016]37);江苏省普通高校研究生科研创新计划(KYLX15_0231);中央高校基本科研业务费;江苏高校优势学科建设工程基金~~

摘　　要：首先,介绍了数字全息激光干涉测量实验原理,设计并搭建扩散系数测量实验平台,运用MATLAB软件编写数字图像处理程序,利用傅里叶相位分析方法进行数字全息图像分析,得到扩散系数解。然后,分别测量温度为298.15K时0.33mol/L的KCl溶液和CO_2气体在水中扩散系数值并与文献研究数据进行对比,进行实验正确性验证,结果显示实验与文献标准值误差分别为1.63%和2.29%,满足实验要求。最后,运用此装置测试了278.15~323.15K时CO_2在RP-3航空燃油中的扩散系数随着温度升高扩散系数增大,并且不同温度下扩散系数值符合阿伦尼乌斯方程。First,the principle of the digital image holographic laser interferometer for diffusion measurement was introduced.An experimental apparatus used to measure diffusion coefficients based on the laser holographic interferometer was established.The digital image processing program is coded in MATLAB.The diffusion coefficient was determined by the analysis of digital holographic images using the theory of Fourier phase method.Then,the diffusion coefficients of 0.33 mol/L potassium chloride solution and carbon dioxide in water at 298.15 Kwere tested,and compared with the data published in literature to prove the accuracy of the test apparatus.The deviation between the experimental results and reported values is 1.64% and 2.29%,which can verify the exactitude of the experiment.Finally,the diffusion coefficient of carbon dioxide in RP-3 jet fuel was measured at 278.15-323.15 Kwith an interval of 5 K.The result shows that the diffusion coefficient rises with the increase of the temperature,and the Arrhenius function can be adopted to express the relationship among the diffusion coefficients at different temperatures.

关 键 词：数字全息 扩散系数 实验测量 二氧化碳 RP-3航空燃油 

分 类 号：V312[航空宇航科学与技术—航空宇航推进理论与工程] TQ021.4[化学工程]