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Large eddy simulation of turbulent premixed combustion using a marker field

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Author

  • Christophe Duwig
  • Laszlo Fuchs

Summary, in English

A new laminar flamelet model is presented for Large Eddy Simulation ( LES) of premixed turbulent combustion. The model uses a marker field S+ to capture the flame. Compared to previous work on marker fields, a modification was introduced to simplify the boundary conditions. Although the scalar S+ is smooth in space, it allows describing steep flame fronts. The S+ equation captures the laminar or turbulent flame propagation via a reactive diffusive balance. The present LES model was used to simulate a turbulent premixed flame stabilized behind a sudden expansion. The LES predictions agree well with available experimental data in term of reproducing the time averaged velocity field as well as for capturing the flame dynamics and flame response to a perturbation.

Department/s

Publishing year

2007

Language

English

Pages

2135-2152

Publication/Series

Combustion Science and Technology

Volume

179

Issue

10

Document type

Journal article

Publisher

Taylor & Francis

Topic

  • Fluid Mechanics and Acoustics

Keywords

  • premixed combustion
  • flamelet model
  • large eddy simulation

Status

Published

ISBN/ISSN/Other

  • ISSN: 1563-521X