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Application of the Unified Turbulent Flame-Speed Closure (UTFC) Combustion Model to Numerical Computation of Turbulent Gas Flames

In: High Performance Computing in Science and Engineering ‘12

Author

Listed:
  • Feichi Zhang

    (Engler-Bunte-Institute, Karlsruhe Institute of Technology, Division of Combustion Technology)

  • Peter Habisreuther

    (Engler-Bunte-Institute, Karlsruhe Institute of Technology, Division of Combustion Technology)

  • Henning Bockhorn

    (Engler-Bunte-Institute, Karlsruhe Institute of Technology, Division of Combustion Technology)

Abstract

The current work presents the numerical computation of turbulent reactive flow by means of three different classes of flame: a premixed, a non-premixed and a partially premixed flame. The aim thereby is to validate the unified turbulent flame-speed closure (UTFC) combustion model developed at our institute. It is based on the presumption that the entire turbulent flame can be viewed as a collection of laminar premixed reaction zones (flamelets) with different mixing ratios. The mixing process is controlled by the mixture fraction ξ and the subsequent chemical reaction by the progress variable θ. The turbulent flame speed S t is used to describe the flame/turbulence interaction as well as the finite rate reaction. Complex chemistry is included and the pressure dependency (elevated pressure) of the combustion process is included in the model as well. The applicability of the model is explored by means of RANS (Reynolds averaged Navier-Stokes approach) and LES (large eddy simulation) methodologies at a wide range of Damköhler number Da. The results of all simulations show reasonable good agreement with the experiments.

Suggested Citation

  • Feichi Zhang & Peter Habisreuther & Henning Bockhorn, 2013. "Application of the Unified Turbulent Flame-Speed Closure (UTFC) Combustion Model to Numerical Computation of Turbulent Gas Flames," Springer Books, in: Wolfgang E. Nagel & Dietmar H. Kröner & Michael M. Resch (ed.), High Performance Computing in Science and Engineering ‘12, edition 127, pages 187-205, Springer.
    • Handle: RePEc:spr:sprchp:978-3-642-33374-3_16
    DOI: 10.1007/978-3-642-33374-3_16
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