Hard-Like Equation of State (Condensed Matter: Structure, Mechanical and Thermal Properties)

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概要

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• In a recent article, we have presented a hard-like equation of state, HLEOS, based on the hard-like behavior of fluids at high densities. It has been shown that the hard-like behavior of any real fluid starts at the common bulk modulus point for each isotherm. To confirm our claim, we have shown that the structure factor of real fluids for such conditions may be predicted just using the Percus-Yevick equation for hard fluids. We have introduced and presented an analytical expression for effective pair correlation function at contact, g_<eff>(σ), for real fluids that it shows a new corresponding states. The HLEOS predicts thermodynamic properties of all kind of fluids, including non-polar, polar, and hydrogen-bonded systems such as Ar, Xe, CH_4, DMB, N_2, C_2H_4, CO, C_2H_5OH, and H_2O successfully. The hard-like EOS has two temperature-dependent parameters, which are related to the soft and hardness of the repulsive branch of the potential. This EOS is also able to predict some known regularities for fluids such as the common bulk modulus point, and common compression point. We have used the HLEOS in prediction of the sound velocity and density for fluids and compared it with the other equations of state.

• 社団法人日本物理学会の論文
• 2003-07-15

著者

• Rostami A

  Mazandaran Univ. Babolsar Irn

• Rostami Abbas

  Department Of Chemistry Faculty Of Basic Sciences Mazandaran University

• KESHAVARZI Ezat

  Department of Chemistry, Isfahan University of Technology

• TABARINIA Farzane

  Department of Chemistry, Faculty of Basic scieneces, Mazandaran University

• Tabarinia Farzane

  Department Of Chemistry Faculty Of Basic Scieneces Mazandaran University

• Keshavarzi E

  Department Of Chemistry Isfahan University Of Technology

• Keshavarzi Ezat

  Department Of Chemistry Isfahan University Of Technology

関連論文

• Prediction of the Long-Range Correlation Length and the Structure Factor for Monatomic Fluids in the Supercritical Region (Condensed Matter : Structure, Mechanical and Thermal Properties)
• Prediction of the Low-k Behaviour of S(k) via a New Model for the DCF in Sub- and Supercritical Regions
• Hard-Like Equation of State (Condensed Matter: Structure, Mechanical and Thermal Properties)
• Solubility Prediction Using Statistical Mechanics
• The Direct Correlation Function and Its Interpretation via the Linear Isotherm Regularity

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