The Entropy Density Behavior across a Plane Shock Wave

Autor: Uribe, Rosa M. Velasco, Francisco J.
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Entropy; Volume 25; Issue 6; Pages: 906
ISSN: 1099-4300
DOI: 10.3390/e25060906
Popis: Entropy density behavior poses many problems when we study non-equilibrium situations. In particular, the local equilibrium hypothesis (LEH) has played a very important role and is taken for granted in non-equilibrium problems, no matter how extreme they are. In this paper we would like to calculate the Boltzmann entropy balance equation for a plane shock wave and show its performance for Grad’s 13-moment approximation and the Navier–Stokes–Fourier equations. In fact, we calculate the correction for the LEH in Grad’s case and discuss its properties.
Databáze: OpenAIRE
Nepřihlášeným uživatelům se plný text nezobrazuje