Clausius–Duhem inequality
Thermodynamic law expression / From Wikipedia, the free encyclopedia
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The Clausius–Duhem inequality[1][2] is a way of expressing the second law of thermodynamics that is used in continuum mechanics. This inequality is particularly useful in determining whether the constitutive relation of a material is thermodynamically allowable.[3]
This inequality is a statement concerning the irreversibility of natural processes, especially when energy dissipation is involved. It was named after the German physicist Rudolf Clausius and French physicist Pierre Duhem.