A new simple h-mesh adaptation algorithm for standard Smagorinsky LES: A first step of Taylor scale as a refinement variable

Sayan Kaennakham; Arne Holdø; Caroline Lambert

doi:10.1260/1750-9548.4.1.33

A new simple h-mesh adaptation algorithm for standard Smagorinsky LES: A first step of Taylor scale as a refinement variable

Sayan Kaennakham, Arne Holdø, Caroline Lambert

Narvik University College

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

87 Downloads (Pure)

Abstract

The interaction between discretization error and modeling error has led to some doubts in adopting Solution Adaptive Grid (SAG) strategies with LES. Existing SAG approaches contain undesired aspects making the use of one complicated and less convenient to apply to real engineering applications. In this work, a new refinement algorithm is proposed aiming to enhance the efficiency of SAG methodology in terms of simplicity in defining, less user's judgment, designed especially for standard Smagorinsky LES and computational affordability. The construction of a new refinement variable as a function of the Taylor scale, corresponding to the kinetic energy balance requirement of the Smagorinsky SGS model is presented. The numerical study has been tested out with a turbulent plane jet in two dimensions. It is found that the result quality can be effectively improved as well as a significant reduction in CPU time compared to fixed grid cases.

Original language	English
Pages (from-to)	33-50
Number of pages	18
Journal	International Journal of Multiphysics
Volume	4
Issue number	1
DOIs	https://doi.org/10.1260/1750-9548.4.1.33
Publication status	Published - 1 Jan 2010

Bibliographical note

Article published under Creative Commons Attribution License (CC-BY 4.0).

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

ASJC Scopus subject areas

Computational Mechanics
Numerical Analysis
Modelling and Simulation
Mechanics of Materials
Fluid Flow and Transfer Processes

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10.1260/1750-9548.4.1.33

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A new simple h-mesh adaptation algorithm for standard Smagorinsky LES: A first step of Taylor scale as a refinement variable

Abstract

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