Effect of grid-filter width definition on implicitly filtered large eddy simulations using OpenFOAM

A. Beechook, H. Medina, H. Fadhila, S. Aleksandrova, S. Benjamin

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

2 Citations (Scopus)

Abstract

Turbulent flow over a 3D backward-facing step at a step-height Reynolds number, Reh, of 5100 is simulated in OpenFOAM using Large Eddy Simulation (LES) to investigate how the definition of the grid-filter width, Δ, influences the computed solutions. As part of this study, two different Δ definitions are tested: Δ=ΔxΔyΔz3 and Δ = max(Δx, Δy, Δz). The LES results show good agreement when compared with DNS and experimental data. The simulation results are used to further evaluate the effect of grid non-uniformity on the computation of the subgrid-scale eddy viscosity, νSGS.

Original languageEnglish
Title of host publicationInternational Conference of Numerical Analysis and Applied Mathematics, ICNAAM 2016
PublisherAmerican Institute of Physics Inc.
Volume1863
ISBN (Electronic)9780735415386
DOIs
Publication statusPublished - 21 Jul 2017
EventInternational Conference of Numerical Analysis and Applied Mathematics 2016 - Rhodes, Greece
Duration: 19 Sep 201625 Sep 2016

Conference

ConferenceInternational Conference of Numerical Analysis and Applied Mathematics 2016
Abbreviated titleICNAAM 2016
CountryGreece
CityRhodes
Period19/09/1625/09/16

Keywords

  • backward-facing step
  • grid-filter width
  • implicit filter
  • Large Eddy Simulation
  • OpenFOAM

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Beechook, A., Medina, H., Fadhila, H., Aleksandrova, S., & Benjamin, S. (2017). Effect of grid-filter width definition on implicitly filtered large eddy simulations using OpenFOAM. In International Conference of Numerical Analysis and Applied Mathematics, ICNAAM 2016 (Vol. 1863). [030033] American Institute of Physics Inc.. https://doi.org/10.1063/1.4992186