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
Sandberg, Richard D.
41d03f60-5d12-4f2d-a40a-8ff89ef01cfa
November 2009
Sandberg, Richard D.
41d03f60-5d12-4f2d-a40a-8ff89ef01cfa
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.
.
(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
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Date deposited: 12 Jan 2010
Last modified: 13 Mar 2024 20:52
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Contributors
Author:
Richard D. Sandberg
Editor:
Michael Resch
Editor:
Sabine Roller
Editor:
Katharina Benkert
Editor:
Martin Galle
Editor:
Wolfgang Bez
Editor:
Hiroaki Kobayashi
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