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一种新的二元Lennard-Jones链式流体互扩散系数计算公式 被引量：1

A New Correlation on Predicting Mutual Diffusion Coefficient of Binary Lennard-Jones Chain Fluid
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摘要 在前期工作提出的Lennard-Jones链式(LJC)流体自扩散系数计算公式的基础上,将计算平衡性质物性参数的范得瓦尔斯混合法则尝试应用于迁移性质的计算中,提出了一种新的计算二元LJC流体互扩散系数的计算公式.公式不包含二元可调参数,物理意义更加明确.通过不同温度、组分范围的12对二元LJC流体的270个实验点对新的方法进行了验证,新公式计算结果与实验值的平均绝对偏差为6.98%.与其他计算方法的比较结果显示,该计算方法具有更高的精度. On the basis of the equation for predicting self-diffusion coefficients of Lennard Jones chain fluid proposed in our previous work,the van der Waals mixing rule to calculate the equilibrium properties is adopted to the calculation of the transport properties in this paper.A new correlation to predict the mutual diffusion coefficient of binary LJC fluid is proposed.The present correlation has no binary adjusted parameter and its physical meaning is more explicit.The calculation results agree with the experimental data of 12 binary LJC systems over the wide ranges of temperature and composition with an average absolute deviation of 6.98%,indicating the higher accuracy and effectiveness of the new equation.
作者 何茂刚 郭盈 钟秋 张颖
机构地区 西安交通大学动力工程多相流国家重点实验室
出处 《西安交通大学学报》 EI CAS CSCD 北大核心 2010年第3期1-5,共5页 Journal of Xi'an Jiaotong University
基金 国家自然科学基金资助项目(50676069 50836004)
关键词 二元液相流体 互扩散系数 Lennard-Jones链式流体 范得瓦尔斯混合法则 binary liquid system mutual diffusion coefficient Lennard-Jones chain fluid van der Waals mixing rule
分类号 TK121 [动力工程及工程热物理—工程热物理]
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参考文献21

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西安交通大学学报
2010年 第3期

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