Skip to main content

Calculation of density fluctuation contributions to thermodynamic properties of simple fluids

Publication ,  Journal Article
Salvino, LW; White, JA
Published in: Journal of Chemical Physics
January 1, 1992

An equation of state, expressed in the form of a recursion relation for the Helmholtz free energy density, is presented. This equation of state represents the free energy density as an initial mean field free energy density, plus a sum of density fluctuation correction terms which serve both to dress the initial mean field equation of state into a more accurate analytic equation of state away from the critical region, and to provide the characteristic asymptotic singular behavior in the critical region. Numerical solutions of the recursion relations are described and presented as pressure isotherms and the calculated density coexistence curve. A comparison is made with simple fluid data for temperatures in the range 0.7≤T/Tc≤1.5 and densities in the range 0≤ρ/ρc≤2.5. In particular, good agreement is found near the critical point. Three critical exponents, δ, γ, and β, are calculated and found to be in good agreement with simple fluid data as well as with renormalization group results for the 3D Ising model. © 1992 American Institute of Physics.

Duke Scholars

Published In

Journal of Chemical Physics

DOI

ISSN

0021-9606

Publication Date

January 1, 1992

Volume

96

Issue

6

Start / End Page

4559 / 4568

Related Subject Headings

  • Chemical Physics
  • 51 Physical sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Salvino, L. W., & White, J. A. (1992). Calculation of density fluctuation contributions to thermodynamic properties of simple fluids. Journal of Chemical Physics, 96(6), 4559–4568. https://doi.org/10.1063/1.462791
Salvino, L. W., and J. A. White. “Calculation of density fluctuation contributions to thermodynamic properties of simple fluids.” Journal of Chemical Physics 96, no. 6 (January 1, 1992): 4559–68. https://doi.org/10.1063/1.462791.
Salvino LW, White JA. Calculation of density fluctuation contributions to thermodynamic properties of simple fluids. Journal of Chemical Physics. 1992 Jan 1;96(6):4559–68.
Salvino, L. W., and J. A. White. “Calculation of density fluctuation contributions to thermodynamic properties of simple fluids.” Journal of Chemical Physics, vol. 96, no. 6, Jan. 1992, pp. 4559–68. Scopus, doi:10.1063/1.462791.
Salvino LW, White JA. Calculation of density fluctuation contributions to thermodynamic properties of simple fluids. Journal of Chemical Physics. 1992 Jan 1;96(6):4559–4568.

Published In

Journal of Chemical Physics

DOI

ISSN

0021-9606

Publication Date

January 1, 1992

Volume

96

Issue

6

Start / End Page

4559 / 4568

Related Subject Headings

  • Chemical Physics
  • 51 Physical sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences