Numerical Simulation of Transition and Turbulence in Wall-Bounded Shear Flow

Philipp Schlatter (), Steffen Stolz and Leonhard Kleiser
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Philipp Schlatter: ETH Zurich, Institute of Fluid Dynamics
Steffen Stolz: ETH Zurich, Institute of Fluid Dynamics
Leonhard Kleiser: ETH Zurich, Institute of Fluid Dynamics

A chapter in High Performance Computing on Vector Systems, 2006, pp 77-86 from Springer

Abstract: Abstract Laminar-turbulent transition encompasses the evolution of a flow from an initially ordered laminar motion into the chaotic turbulent state. Transition is important in a variety of technical applications, however its accurate prediction and the involved physical mechanisms are still a matter of active research. In the present contribution, an overview is given on recent advances with the simulation of transitional and turbulent incompressible wall-bounded shear flows. The focus is on large-eddy simulations (LES). In LES, only the large-scale, energy-carrying vortices of the flow are accurately resolved on the numerical grid, whereas the small-scale fluctuations, assumed to be more homogeneous, are treated by a subgrid-scale (SGS) model. The application of LES to flows of technical interest is promising as LES provides reasonable accuracy at significantly reduced computational cost compared to fully-resolved direct numerical simulations (DNS). Nevertheless, LES of practical flows still require massive computational resources and the use of supercomputer facilities.

Keywords: Direct Numerical Simulation; Direct Numerical Simulation Data; Smagorinsky Model; Hairpin Vortex; Bypass Transition (search for similar items in EconPapers)
Date: 2006
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-540-35074-3_6

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DOI: 10.1007/3-540-35074-8_6

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