Study of an entropy-consistent Navier–Stokes flux

Mohammed, Akmal Nizam and Ismail, Farzad (2014) Study of an entropy-consistent Navier–Stokes flux. International Journal of Computational Fluid Dynamics, 27 (1). pp. 1-14. ISSN 1029-0257

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Abstract

This paper presents a study to achieve discrete entropy consistency using artificial and physical diffusion mechanisms. The study begins with the one-dimensional viscous Burgers equation, specifically looking at the shock results of entropy-conserved fluxes combined with a few choices of artificial and physical viscous diffusions. The approach is then repeated for the Navier–Stokes equations. Overall, it is demonstrated that the artificial viscosity (or entropy) terms are still needed in addition to physical viscosity to achieve entropy consistency in shock predictions, although one of the artificial terms can be dropped for high viscosity or low Reynolds number flow.

Item Type:	Article
Uncontrolled Keywords:	shock capturing; Navier–Stokes flux; entropy consistency; entropy production; physical viscosity
Subjects:	T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2000-2891 Dynamoelectric machinery and auxiliaries. Including generators, motors, transformers
Divisions:	Faculty of Mechanical and Manufacturing Engineering > Department of Mechanical Engineering
Depositing User:	UiTM Student Praktikal
Date Deposited:	07 Dec 2021 04:44
Last Modified:	07 Dec 2021 04:44
URI:	http://eprints.uthm.edu.my/id/eprint/4513

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