کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
203609 460666 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Application of extended scaling law to the surface tension of fluids of wide range of molecular shapes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Application of extended scaling law to the surface tension of fluids of wide range of molecular shapes
چکیده انگلیسی

A linear correlation is presented between the reduced surface tension σ* and reduced temperature TextScal* by applying the extended scaling law. The correlation is applied quite accurately to 17 atomic, diatomic, and molecular fluid hydrocarbons of wide range of molecular shapes. The reduced surface entropy SextScals* is introduced, which has a value of 1.000 over the whole liquid range, indicating that the corresponding states principle is followed fully. The correlation for SextScals* contains a quantity Eμs, which is related to the surface energy Es, in the form Eμs=σ−(1/μ)T(∂σ/∂T), where σ is the surface tension, T the absolute temperature, μ the critical exponent for surface tension, and the surface entropy Ss = −(∂σ/∂T  ). Eμs is different form Es by an additional (1/μ) factor coupled to Ss. The form of the equation for Eμs is different from the equation for Es, which is a combination of the first and the second laws of thermodynamic for interface. The relation for SextScals* acts as an intermediate equation to derive a new analytical expression for Eμs in terms of intensive physical and thermodynamic properties of the particular fluid.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 249, Issues 1–2, 15 November 2006, Pages 153–158
نویسندگان
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