Gibbs function

From Glossary of Meteorology



Gibbs function

(Also called Gibbs free energy, thermodynamic potential.)

A mathematically defined thermodynamic function of state, which is constant during a reversible isobaric–isothermal process. The most important such process in meteorology is the change in phase of water substance. In symbols the Gibbs function g is
ams2001glos-Ge33
where h is specific enthalpy, T is Kelvin temperature, and s is specific entropy.
Compare Helmholtz function.


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