Comment on Cimmelli, V.A. Interpretation of Second Law of Thermodynamics in Extended Procedures for the Exploitation of the Entropy Inequality: Korteweg Fluids and Strain-Gradient Elasticity as Examples. Entropy 2024, 26, 293
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsComments for author File: Comments.pdf
Reviewer 2 Report
Comments and Suggestions for AuthorsThis article is a comment on Cimmelli’s publication Entropy 2024, 26, 293. The author proposes a critical clarification regarding the compatibility of the constitutive equations of Korteweg fluids with the second law of thermodynamics when using the classical Coleman-Noll procedure. He refutes the notion that the classical Coleman-Noll framework is insufficient for Korteweg fluids unless modifications to the energy equation or entropy flux are introduced. Instead, the author shows that treating the entropy flux as an independent constitutive quantity, as proposed by Müller, enables compatibility with the second law without requiring extended procedures.
The arguments presented are rigorous and well-supported by references to foundational works, including those by Coleman and Noll, Müller, and Dunn and Serrin. The clarification regarding the entropy flu is significant. I recommend the publication of the article.