LES and DNS Turbulence Modeling

Sal Rodriguez
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Sal Rodriguez: Sandia National Laboratories

Chapter Chapter 5 in Applied Computational Fluid Dynamics and Turbulence Modeling, 2019, pp 197-223 from Springer

Abstract: Abstract This chapter is divided into two parts, LES and DNS. In the first part, the LES turbulence model is derived from first principles, and its terms are described in detail. The usage of LES filters is described, along with various recommendations. The LIKE algorithm is applied to show how to model large eddies properly by applying the appropriate node-to-node computational distances. LES-specific boundary and initial conditions are described, and dozens of practical recommendations are provided. In the second part, analogous discussions and recommendations for DNS are included as well.

Keywords: LES; DNS; Boundary and initial conditions; Modeling guidelines and recommendations (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-030-28691-0_5

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DOI: 10.1007/978-3-030-28691-0_5

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