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Compressibility equation
Equation which relates the isothermal compressibility to the structure of the liquid From Wikipedia, the free encyclopedia
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In statistical mechanics and thermodynamics the compressibility equation refers to an equation which relates the isothermal compressibility (and indirectly the pressure) to the structure of the liquid. It reads:where is the number density, g(r) is the radial distribution function and is the isothermal compressibility.
This article relies largely or entirely on a single source. (March 2024) |
Using the Fourier representation of the Ornstein-Zernike equation the compressibility equation can be rewritten in the form:
where h(r) and c(r) are the indirect and direct correlation functions respectively. The compressibility equation is one of the many integral equations in statistical mechanics.
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References
- McQuarrie, Donald A. (1976). Statistical mechanics. New York: Harper & Row. p. 269. ISBN 978-0-06-044366-5.
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