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首页> 外文期刊>Journal of Molecular Liquids >Modeling viscosity of alcohols based on the CPA-EoS plus f -theory
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Modeling viscosity of alcohols based on the CPA-EoS plus f -theory

机译：基于CPA-EoS加f-理论的醇粘度建模

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摘要

Friction (f) theory is one of the methods for modeling viscosity of fluids. According to this theory, the viscosity of a fluid is obtained from dilute gas viscosity, and the viscosity of the residual friction. The residual friction is included in the van der Waals attraction and repulsive terms, which are calculated with an equation of state (EOS). In this study, we examined the capability of combining the CPA (Cubic-Plus-Association) Equation of State with the f-theory for estimating viscosity of different alcohols (methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 1-pentanol and 1-octanol). Also, worth noting that CPA f-theory model performance, compared to PR f-theory and SRK f-theory models, shows better results. For the CPA f-theory model, the overall absolute average deviation (overall AAD) for 2B scheme is approximately equal to 0.54% and for the 3B scheme, it is approximately equal to 0.45%, while the overall AAD for PR f-theory model is approximately equal to 1.13% and for the SRK f-theory model is approximately equal to 1.15%. (c) 2016 Elsevier B.V. All rights reserved.
机译：摩擦力（f）理论是流体粘度建模的方法之一。根据该理论，从稀气体粘度和残留摩擦的粘度获得流体的粘度。残余摩擦包括在范德华吸引力和排斥项中，它们是用状态方程（EOS）计算的。在这项研究中，我们研究了将CPA（立方加缔合）状态方程与f-理论相结合的能力，以估算不同醇（甲醇，乙醇，1-丙醇，2-丙醇，1-丁醇， 1-戊醇和1-辛醇）。另外，值得注意的是，与PR f-理论和SRK f-理论模型相比，CPA f-理论模型的性能显示出更好的结果。对于CPA f-理论模型，2B方案的整体绝对平均偏差（总体AAD）大约等于0.54％，对于3B方案，它近似等于0.45％，而PR f-理论模型的总体绝对平均偏差（近似AAD）大约等于1.13％，对于SRK f-理论模型大约等于1.15％。 （c）2016 Elsevier B.V.保留所有权利。

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