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朱宇; 周健; 陆小华; 王延儒; 时钧 BR>
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ZHU Yu;ZHOU Jian;LU Xiaohua;WANG Yanru;SHI Jun
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Abstract: A new equation of self-diffusion coefficients for real fluids is proposed over wide temperature and density ranges.The new equation is derived from the molecular dynamics simulation data of LJ model fluid in literature,which could be applied to gas,liquid and supercritical fluid (0≤ ρ * ≤1.0,0.8≤ T *≤4.0) with AAD 4.95% .With a generalized expression for the LJ parameters of pure real fluids according to the corresponding state principle and critical properties,the proposed equation is extended to pure real substances with the prediction accuracy 18.83%.Correlated LJ parameters are also used for comparison and the total AAD is 3.43% for 19 pure substances and 1299 data points.The new self-diffusion equation could be used in process design and development.
朱宇; 周健; 陆小华; 王延儒; 时钧 BR>. 普遍化的基于LJ流体的自扩散系数预测模型 [J]. CIESC Journal.
ZHU Yu;ZHOU Jian;LU Xiaohua;WANG Yanru;SHI Jun. GENERALIZED PREDICTIVE SELF-DIFFUSION COEFFICIENT EQUATION BASED ON LENNARD-JONES FLUID[J]. .
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https://hgxb.cip.com.cn/CN/Y2002/V53/I7/765