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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
The viscosity ratio as indicator to ensure the mesh quality for LES analysis (nut/nu, where nut and nu are turbulent and molecular kinematic viscosities, respectively). (A): cross-section colored by the viscosity ratio. (B): iso-surface of the viscosity ratio of 0.1.