Cristin-resultat-ID: 1695883
Sist endret: 18. april 2020, 16:21
NVI-rapporteringsår: 2019
Resultat
Vitenskapelig artikkel
2019

A Parametric Study of LEM3D Based on Comparison with a Turbulent Lifted Hydrogen Jet Flame in a Vitiated Co-Flow

Bidragsytere:
  • Fredrik Grøvdal
  • Sigurd Sannan
  • Jyh-Yuan Chen og
  • Terese Løvås

Tidsskrift

Combustion Science and Technology
ISSN 0010-2202
e-ISSN 1563-521X
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2019
Trykket: 2020
Open Access

Importkilder

Scopus-ID: 2-s2.0-85064480590

Beskrivelse Beskrivelse

Tittel

A Parametric Study of LEM3D Based on Comparison with a Turbulent Lifted Hydrogen Jet Flame in a Vitiated Co-Flow

Sammendrag

A novel model, the hybrid RANS-LEM3D model, is applied to a lifted turbulent N 2 diluted hydrogen jet flame in a vitiated co-flow of hot products from lean H 2 /air combustion. In the present modeling approach, mean-flow information from RANS provides model input to LEM3D, which returns the scalar statistics needed for more accurate mixing and reaction calculations. The dependence of lift-off heights and flame structure on iteration schemes and model parameters are investigated in detail, along with other characteristics not available from RANS alone, such as the instantaneous and detailed species profiles and small-scale mixing. Two different iteration procedures, a breadth-first search (BFS) and a checkerboard algorithm, as well as parameters of the model framework are examined and tested for sensitivity toward the results. The impact of heat release and thermal expansion is demonstrated and evaluated in detail. It is shown for the current application that LEM3D provides additional details compared to the RANS simulation with a low computational cost in comparison with a conventional DNS simulation. © 2019, © 2019 Taylor & Francis Group, LLC.

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

Jyh-Yuan Chen

  • Tilknyttet:
    Forfatter
    ved University of California, Berkeley

Terese Løvås

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