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Comparison of subgrid-scale models for large-eddy simulation of hydrodynamic and magnetohydrodynamic channel flows

Sebastian Prinz (Institut für Thermo- und Fluiddynamik, Technische Universität Ilmenau, Ilmenau, Germany)
Jörg Schumacher (Institut für Thermo- und Fluiddynamik, Technische Universität Ilmenau, Ilmenau, Germany)
Thomas Boeck (Institut für Thermo- und Fluiddynamik, Technische Universität Ilmenau, Ilmenau, Germany)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 10 July 2019

Issue publication date: 30 August 2019

Abstract

Purpose

This paper aims to address the performance of different subgrid-scale models (SGS) for hydro- (HD) and magnetohydrodynamic (MHD) channel flows within a collocated finite-volume scheme.

Design/methodology/approach

First, the SGS energy transfer is analyzed by a priori tests using fully resolved DNS data. Here, the focus lies on the influence of the magnetic field on the SGS energy transport. Second, the authors performed a series of 18 a posteriori model tests, using different grid resolutions and SGS models for HD and MHD channel flows.

Findings

From the a priori analysis, the authors observe a quantitative reduction of the SGS energy transport because of the action of the magnetic field depending on its orientation. The a posteriori model tests show a clear improvement because of the use of mixed-models within the numerical scheme.

Originality/value

This study demonstrates the necessity of improved SGS modeling strategies for magnetohydrodynamic channel flows within a collocated finite-volume scheme.

Keywords

Acknowledgements

This work is supported by the Deutsche Forschungsgemeinschaft with grant No. GRK 1567. The authors also thank the John von Neumann Institute for Computing for support by grant HIL04.

Citation

Prinz, S., Schumacher, J. and Boeck, T. (2019), "Comparison of subgrid-scale models for large-eddy simulation of hydrodynamic and magnetohydrodynamic channel flows", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 7, pp. 2224-2236. https://doi.org/10.1108/HFF-09-2018-0500

Publisher

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Emerald Publishing Limited

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