Measurement of mass diffusion coefficients of O_2 in aviation fuel through digital holographic interferometry  

作　　者：Chaoyue LI Weihua LIU Xiaotian PENG Lei SHAO Shiyu FENG 

机构地区：[1]Key Laboratory of Aircraft Environment Control and Life Support of Ministry of Industry and Information Technology,College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics

出　　处：《Chinese Journal of Aeronautics》2019年第5期1184-1189,共6页中国航空学报（英文版）

基　　金：supported by the Aeronautical Science Foundation of China(No.20132852040);the Fundation of Graduate Innovation Center in NUAA(No.kfjj20170116);the Fundamental Research Funds for the Central Universities;the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘　　要：The experimental apparatus to measure the mass diffusion coefficients of O2 in aviation fuel was constructed based on the digital holographic interferometry method. The theory of mass diffusion coefficient and interference image processing were introduced in detail. The accuracy of the experiment was verified by measuring the mass diffusion coefficient of 0.33 mol/L KCl in aqueous solution at 298.15 K. The mass diffusion coefficients of O_2 in RP3 and RP5 aviation fuels were measured at temperature from 278.15 K to 333.15 K, and the Arrhenius equation was employed to fit the experimental data. In terms of the Stokes-Einstein equation, the viscosities of these two aviation fuels were tested to estimate the correlation among mass diffusion coefficient, viscosity and temperature. A uniform polynomial calculation correlation was proposed to predict the mass diffusion coefficients of O_2 in both RP3 and RP5 aviation fuels, and its accuracy is considerably higher than that of the Stokes-Einstein equation.The experimental apparatus to measure the mass diffusion coefficients of O2 in aviation fuel was constructed based on the digital holographic interferometry method. The theory of mass diffusion coefficient and interference image processing were introduced in detail. The accuracy of the experiment was verified by measuring the mass diffusion coefficient of 0.33 mol/L KCl in aqueous solution at 298.15 K. The mass diffusion coefficients of O_2 in RP3 and RP5 aviation fuels were measured at temperature from 278.15 K to 333.15 K, and the Arrhenius equation was employed to fit the experimental data. In terms of the Stokes-Einstein equation, the viscosities of these two aviation fuels were tested to estimate the correlation among mass diffusion coefficient, viscosity and temperature. A uniform polynomial calculation correlation was proposed to predict the mass diffusion coefficients of O_2 in both RP3 and RP5 aviation fuels, and its accuracy is considerably higher than that of the Stokes-Einstein equation.

关 键 词：AVIATION fuel Diffusion COEFFICIENTS Digital HOLOGRAPHIC INTERFEROMETRY OXYGEN VISCOSITY 

分 类 号：V[航空宇航科学技术]