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首页> 外文期刊>Journal of Physical and Chemical Reference Data >Viscosity and pVT-second virial coefficient of binary noble-globular gas and globular-globular gas mixtures calculated by means of an isotropic temperature-dependent potential
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Viscosity and pVT-second virial coefficient of binary noble-globular gas and globular-globular gas mixtures calculated by means of an isotropic temperature-dependent potential

机译：用各向同性随温度变化的势计算二元稀有球状气体和球状气体混合物的粘度和pVT-秒维里系数

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This work presents results of an extension of our earlier studies of the transport and equilibrium properties of pure heavy globular gases. It demonstrates a simple and reliable procedure for estimating the equilibrium and transport properties of their mixtures using the pure gas potentials of interaction when there are no available experimental data. Here we consider binary gas mixtures of globular gases between themselves and with the noble gases as well. The gases involved are: BF3, CH4, CF4, SiF4, SiCl4, CCl4, SF6, MoF6, WF6, UF6, C(CH3)(4), Si(CH3)(4), Ar, Kr, and Xe. The calculations were performed by means of the so called isotropic temperature-dependent potential (ITDP) introduced by us earlier and applied to some binary mixtures (CH4-CF4, CH4-SF6, CF4-SF6). The CH4-CH4 and noble gases potentials of interactions have been determined in a (n-6) Lennard-Jones shape in the temperature range 200-1000 K by fitting a large number of viscosity and pVT-second virial coefficient data measured by different authors with different experimental techniques. The ITDP parameters of molecular gases were taken from the tables we have determined and published earlier [L. Zarkova and U. Hohm, J. Phys. Chem. Ref. Data 31, 183 (2002)]. Simple combination rules allow us to take into account the influence of the temperature on the thermophysical properties of the binary gas mixtures containing heavy globular molecules. Tables with potential parameters of equal and unequal particles and properties of the equimolar mixtures are given for all mixtures in the temperature range 200-900 (1000) K. The deviations between experimental and calculated viscosity and second virial coefficient data of some more examined mixtures permit to evaluate the quality of the proposed approach. (C) 2003 American Institute of Physics. [References: 28]
机译：这项工作提出了我们对纯重球状气体的传输和平衡特性的早期研究的扩展结果。它展示了一种简单可靠的方法，可在没有可用的实验数据时使用纯净的气体相互作用势来估算混合物的平衡和传输性质。在这里，我们考虑它们之间以及稀有气体与球状气体的二元混合气体。涉及的气体为：BF3，CH4，CF4，SiF4，SiCl4，CCl4，SF6，MoF6，WF6，UF6，C（CH3）（4），Si（CH3）（4），Ar，Kr和Xe。该计算是通过我们先前介绍的所谓各向同性的温度相关电势（ITDP）进行的，并应用于一些二元混合物（CH4-CF4，CH4-SF6，CF4-SF6）。通过拟合由不同作者测得的大量粘度和pVT秒维里系数数据，已确定了（n-6）Lennard-Jones形状的CH4-CH4和稀有气体的相互作用势在200-1000 K的温度范围内用不同的实验技术分子气体的ITDP参数取自我们已经确定并在之前发表的表中[L. Zarkova和U. Hohm，J。Phys。化学参考数据31，183（2002）]。简单的组合规则使我们能够考虑温度对包含重球状分子的二元气体混合物的热物理性质的影响。给出了温度范围为200-900（1000）K时所有混合物具有相等和不相等颗粒的潜在参数以及等摩尔混合物的性质的表格。实验和计算的粘度之间的偏差以及一些其他经过检查的混合物的第二维里系数数据允许评估所提出方法的质量。 （C）2003美国物理研究所。 [参考：28]

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