CUED Publications database

Off-wall boundary conditions for turbulent flows obtained from buffer-layer minimal flow units

Garcia-Mayoral, R and Pierce, B and Wallace, J Off-wall boundary conditions for turbulent flows obtained from buffer-layer minimal flow units. In: 65th Annual Meeting of the Division of Fluid Dynamics of the American Physical Society, 2012-11-18 to 2012-11-20, San Diego, CA, USA.. (Unpublished)

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Abstract

There is strong evidence that the transport processes in the buffer region of wall-bounded turbulence are common across various flow configurations, even in the embryonic turbulence in transition (Park et al., Phys. Fl. 24). We use this premise to develop off-wall boundary conditions for turbulent simulations. Boundary conditions are constructed from DNS databases using periodic minimal flow units and reduced order modeling. The DNS data was taken from a channel at Reτ=400 and a zero-pressure gradient transitional boundary layer (Sayadi et al., submitted to J. Fluid Mech.). Both types of boundary conditions were first tested on a DNS of the core of the channel flow with the aim of extending their application to LES and to spatially evolving flows.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div A > Fluid Mechanics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:12
Last Modified: 26 Nov 2014 19:05
DOI: