Numerical Investigations of Turbulent Inflow Condition Generation for LES

Druault, Philippe; Largeau, J.-F.; Coiffet, F.; Delville, J.; Bonnet, Jean-Paul; Lardeau, Sylvain

doi:10.1115/1.2012499

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2007

2024

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Cited by 6 publications

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“…This method is not generally applicable to turbulent simulations, since simulating the transition process is in itself a costly procedure. A number of strategies for generating inflow boundary conditions have been proposed, and a comprehensive literature survey on this topic may be found in Lund, Wu & Squires (1998) and Druault et al (2005).…”

Section: Introductionmentioning

confidence: 99%

On the rate of spatial predictability in near-wall turbulence

Nikitin

2008

J. Fluid Mech.

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Spatial evolution of small perturbations introduced into an inlet cross-section of fully developed turbulent flow in a long straight circular pipe is investigated via direct numerical simulation (DNS). The turbulent inflow field is extracted from an auxiliary streamwise-periodic simulation running in parallel with the main spatial simulation. It is shown that mean perturbation amplitude ϵ increases exponentially with distance downstream. The growth rate is found to be constant when normalized by viscous length, ϵ ~ exp(0.0021x+) over the considered Reynolds-number range 140 ≤ Reτ ≤ 320. The universal character of perturbation growth is confirmed by channel-flow simulations.

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Section: Introductionmentioning

confidence: 99%