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Comment
Peer-Review Record

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

Entropy 2025, 27(10), 1050; https://doi.org/10.3390/e27101050
by Samuel Paolucci
Reviewer 1: Anonymous
Reviewer 2: Anonymous
Entropy 2025, 27(10), 1050; https://doi.org/10.3390/e27101050
Submission received: 2 May 2024 / Accepted: 24 September 2025 / Published: 10 October 2025

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors


Comments for author File: Comments.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

This 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.

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