Cristin-resultat-ID: 1820532
Sist endret: 18. desember 2020, 14:33
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

Dimensional Decomposition of Turbulent Reacting Flows

Bidragsytere:
  • Fredrik Grøvdal
  • Sigurd Sannan
  • Christoph Meraner
  • Tian Li og
  • Terese Løvås

Tidsskrift

Flow Turbulence and Combustion
ISSN 1386-6184
e-ISSN 1573-1987
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Publisert online: 2020
Trykket: 2021
Volum: 106
Sider: 163 - 183
Open Access

Importkilder

Scopus-ID: 2-s2.0-85088095827

Beskrivelse Beskrivelse

Tittel

Dimensional Decomposition of Turbulent Reacting Flows

Sammendrag

A dimensional-decomposition approach, decomposing 3D into 3×1D for turbulent (reacting) flows are motivated, discussed and investigated. In the three-dimensional Linear Eddy Model (LEM3D), three orthogonally intersecting arrays of 1D domains are coupled to capture the 3D characteristics of fluid flows. The currently used recouplings for LEM3D are enlightened and thoroughly discussed. A study of the flame front of a freely propagating laminar premixed flame shows that the flame stabilizes at the upstream face of the initial solution when both the advective and auxiliary recouplings are activated. Furthermore, results from LEM3D simulations of a vitiated co-flow burner are re-visited providing a more detailed discussion of the noted early mixing and reaction of the hydrogen fuel of the burner. The main conclusion of the present work is that the auxiliary coupling based on rotations of the 3D control volumes introduces very large gradients in the near-field geometry of jets, leading to a significant amount of artificial diffusion and locally increased burning rates. This implies that applications of LEM3D should be restricted to sub-regions where high-resolution treatment of scalar mixing and reaction is of particular interest. © 2020, The Author(s).

Bidragsytere

Fredrik Grøvdal

  • Tilknyttet:
    Forfatter
    ved Institutt for energi- og prosessteknikk ved Norges teknisk-naturvitenskapelige universitet

Sigurd Sannan

  • Tilknyttet:
    Forfatter
    ved Termisk energi ved SINTEF Energi AS

Christoph Meraner

  • Tilknyttet:
    Forfatter
    ved Institutt for energi- og prosessteknikk ved Norges teknisk-naturvitenskapelige universitet

Tian Li

  • Tilknyttet:
    Forfatter
    ved Institutt for energi- og prosessteknikk ved Norges teknisk-naturvitenskapelige universitet

Terese Løvås

  • Tilknyttet:
    Forfatter
    ved Institutt for energi- og prosessteknikk ved Norges teknisk-naturvitenskapelige universitet
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