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Direct numerical simulations of turbulent shear flows

Direct numerical simulations of turbulent shear flows
Direct numerical simulations of turbulent shear flows
This contribution is concerned with the simulation of turbulent shear flows. First, direct numerical simulations (DNS) are introduced, focusing on the challenges associated with computing turbulent flows without any empirical modelling. The numerical method of one of our DNS codes is presented in detail and its performance on different HPC systems is discussed, in particular issues arising with multi-core architectures. An overview of DNS-based research conducted in the Aerodynamics and Flight Mechanics Research group at the University of Southampton is then given, in an attempt to highlight how large-scale DNS performed on HPC resources can be used as a ‘virtual wind tunnel’, i.e. to conduct numerical experiments that cannot be performed in traditional laboratories. A range of different physical problems is discussed, including the noise generation of jets and turbulent flows over airfoils, turbulent structure generation in mixing layers and supersonic wakes, the sensitivity of turbulent spots to Mach number and wall temperature, turbulent breakdown of vortex rings, the influence of background turbulence on far-field wakes, and the evolution of wingtip vortices
364203912X
151-166
Springer
Sandberg, Richard D.
41d03f60-5d12-4f2d-a40a-8ff89ef01cfa
Resch, Michael
Roller, Sabine
Benkert, Katharina
Galle, Martin
Bez, Wolfgang
Kobayashi, Hiroaki
Sandberg, Richard D.
41d03f60-5d12-4f2d-a40a-8ff89ef01cfa
Resch, Michael
Roller, Sabine
Benkert, Katharina
Galle, Martin
Bez, Wolfgang
Kobayashi, Hiroaki

Sandberg, Richard D. (2009) Direct numerical simulations of turbulent shear flows. Resch, Michael, Roller, Sabine, Benkert, Katharina, Galle, Martin, Bez, Wolfgang and Kobayashi, Hiroaki (eds.) In High Performance Computing on Vector Systems 2009. Springer. pp. 151-166 . (doi:10.1007/978-3-642-03913-3_12).

Record type: Conference or Workshop Item (Paper)

Abstract

This contribution is concerned with the simulation of turbulent shear flows. First, direct numerical simulations (DNS) are introduced, focusing on the challenges associated with computing turbulent flows without any empirical modelling. The numerical method of one of our DNS codes is presented in detail and its performance on different HPC systems is discussed, in particular issues arising with multi-core architectures. An overview of DNS-based research conducted in the Aerodynamics and Flight Mechanics Research group at the University of Southampton is then given, in an attempt to highlight how large-scale DNS performed on HPC resources can be used as a ‘virtual wind tunnel’, i.e. to conduct numerical experiments that cannot be performed in traditional laboratories. A range of different physical problems is discussed, including the noise generation of jets and turbulent flows over airfoils, turbulent structure generation in mixing layers and supersonic wakes, the sensitivity of turbulent spots to Mach number and wall temperature, turbulent breakdown of vortex rings, the influence of background turbulence on far-field wakes, and the evolution of wingtip vortices

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More information

Published date: November 2009
Venue - Dates: 9th Teraflop Workshop & 10th Teraflop Workshop, Tohoku, Japan and Stuttgart, Germany, 2009-11-01

Identifiers

Local EPrints ID: 71942
URI: http://eprints.soton.ac.uk/id/eprint/71942
ISBN: 364203912X
PURE UUID: 7f3fedab-1c53-46c9-9d0f-b8ac7c979b44
ORCID for Richard D. Sandberg: ORCID iD orcid.org/0000-0001-5199-3944

Catalogue record

Date deposited: 12 Jan 2010
Last modified: 13 Mar 2024 20:52

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Contributors

Author: Richard D. Sandberg ORCID iD
Editor: Michael Resch
Editor: Sabine Roller
Editor: Katharina Benkert
Editor: Martin Galle
Editor: Wolfgang Bez
Editor: Hiroaki Kobayashi

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