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Analytic Equation of State for Generalized Morse Potential Fluid and Application to N2 Fluid
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Xin-Ying XUE, Jiu-Xun SUN, Rong-Gang TIAN
Chinese Journal of High Pressure Physics | 2009, 23(4) : 288 - 298
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Chinese Journal of High Pressure Physics | 2009, 23(4): 288-298
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Analytic Equation of State for Generalized Morse Potential Fluid and Application to N2 Fluid
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Xin-Ying XUE, Jiu-Xun SUN, Rong-Gang TIAN
Affiliations
  • Department of Applied Physics, University of Electronic Science and Technology, Chengdu 610054, China

    • XUE Xin-Ying(1970—), male, doctor of physics. Main Instrest: Equation of state of the simple fluids. E-mail:

About Author:

XUE Xin-Ying(1970—), male, doctor of physics. Main Instrest: Equation of state of the simple fluids. E-mail:

Published: 2009-08-15
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The analytic expressions for equation of state (EOS) and thermodynamic properties have been derived for the generalized Morse (GM) potential fluids, by using the Ross variational perturbation theory and the analytic Percus-Yevick (PY) expression of radial distribution function of hard spheres. Extensive comparison of the numerical results with computer simulations shows that the precision of the analytic Ross theory is equivalent to or slightly better than the non-analytic modified Weeks-Chandler-Anderson (mWCA) theory, and is much better than the complicated optimized reference hyper-netted chain (RHNC) theory. This analytic expressions for equation of state have been applied to N2 fluid at ambient temperature and low pressure (below 1 GPa) with the parameters of the generalized Morse potential are obtained by fitting to experimental data, results of prediction of the pressure above 1 GPa validate the analytic EOS with good agreement within a wide range of pressure and temperature.

equation of state  /  thermodynamic quantities  /  analyticity  /  variational
薛新英, 孙久勋, 田荣刚. 广义Morse流体解析状态方程及对氮的应用. 高压物理学报, 2009 , 23 (4) : 288 -298 .
Xin-Ying XUE, Jiu-Xun SUN, Rong-Gang TIAN. Analytic Equation of State for Generalized Morse Potential Fluid and Application to N2 Fluid[J]. Chinese Journal of High Pressure Physics, 2009 , 23 (4) : 288 -298 .
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Funding
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  • The Joint Fund of NSFC and CAEP(10476007)
  • Support Programs for Academic Excellence of the Education Ministry of China(NCET-05-0799)
  • UESTC(23601008)
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Year 2009 volume 23 Issue 4
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Article Info
  • Receive Date：2008-10-16
  • Online Date：2026-10-30
  • Published：2009-08-15
Article Data
Affiliations
History
  • Received：2008-10-16
  • Revised：2009-03-16
Funding
The Joint Fund of NSFC and CAEP(10476007)
Support Programs for Academic Excellence of the Education Ministry of China(NCET-05-0799)
UESTC(23601008)
Affiliations
    Department of Applied Physics, University of Electronic Science and Technology, Chengdu 610054, China

Corresponding:

SUN Jiu-Xun(1967—), male, doctor of physics, professor. Main Instrest: Equation of state of the fluids and solids, phase equilibrium and phase transition. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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