Measurement of Diffusion Coefficients of Air in Silicone Oil and in Hydraulic Oil
Measurement of Diffusion Coefficients of Air in Silicone Oil and in Hydraulic Oil作者机构：State Key Lab of Fluid Power Transmission and Control Zhejiang University Hangzhou 310027 China
出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)
年 卷 期：2011年第19卷第2期
页 面：205-211页
核心收录：
学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070104[理学-应用数学] 0703[理学-化学] 0701[理学-数学]
基 金：Supported by the National Natural Science Foundation of China (50675202)
主 题：air silicone oil hydraulic oil diffusion coefficient viscosity
摘 要：A piston-cylinder apparatus was established to measure the solubility and diffusivity of air in dimethyl silicone oils and in hydraulic oils based on the PVT state equation of air and the solution of unsteady one-dimensional diffusion *** measured diffusivity-temperature relation can be well fitted by the Arrhenius equation for engineering *** correlation between the solute diffusivity D and solvent viscosity μ is *** terms of Eyring＇s activation theory,the activation in the air-silicone-oil diffusion process is quite different from that in the momentum transport of the silicone oil：the activation entropy of the former is positive while that of latter is ***,the activation enthalpies of the two processes are in the same order of magnitude,which leads to the observation that Dμ/T is roughly constant.
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