کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
202674 460616 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
About the physical validity of attaching the repulsive terms of analytical EOS models by temperature dependencies
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
About the physical validity of attaching the repulsive terms of analytical EOS models by temperature dependencies
چکیده انگلیسی

This study demonstrates that any temperature dependency introduced in the term describing the inter-molecular repulsive forces of analytical EOS models leads to prediction of the infinite value for the isochoric heat capacity at the density limit conditions. The temperature-dependent hard sphere diameters and co-volumes necessarily result in the non-physical negative infinite values of this property at the infinite pressure, which in turn leads to the non-physical predictions of other properties, such as the sound velocities. In addition, this study demonstrates that the inconsistency existing at the imaginary state of infinite pressure may have a very strong negative impact on predicting the data of real fluids at the experimentally available pressures. Therefore making the repulsion compressibility factor temperature-dependent seems highly non-recommended.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 293, Issue 2, 25 June 2010, Pages 164–167
نویسندگان
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