2024-03-28T16:38:19Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02005570
2022-10-31T02:47:26Z
1642837622505:1642837957109:1642837983980
1642838403551:1642838406414
遮蔽べき級数型相互作用流体の熱力学的自己無撞着理論
A Self-cosistent Ornstein-Zernike approximation for a fluid with a screened power series interaction
安富, 允
Yasutomi, Makoto
We present a thermodynamically self-consistent Ornstein-Zernike approximation (SCOZA) for a fluid of spherical particles with a pair potential given by a hard core repulsion and screened power series (SPS) tails. We take advantage of the known analytical properties of the solution of the Ornstein-Zernike equation for the case in which the direct correlation function outside the repulsive core is given by the SPS tails: c(r)=Σ^^N__<n=1>e^<-z_nr>Σ^^<L_n>__<r=-1>K^(n,r)z^<r+1>_nr^r r>1, and the radial distribution function g(r) satisfies the exact core condition g(r) = 0 for r<1. The SCOZA is known to provide very good overall thermodynamics and remarkably accurate critical point and coexistence curve. In this paper, we present some preliminary numerical results for parameters in c(r) which are chosen to fit the Lennard-Jones potential. Full-dress investigations will be presented in a series of subsequent papers for fluids with variety of smooth, realistic isotropic potentials where the pair potentials can be fitted by the SPS tails.
紀要論文
http://purl.org/coar/resource_type/c_6501
琉球大学理学部
2010-03
VoR
http://hdl.handle.net/20.500.12000/17367
0286-9640
AN00250774
琉球大学理学部紀要
Bulletin of the College of Science. University of the Ryukyus
89
4
1
jpn
open access