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Conservative Implementation of LES-CMC for Turbulent Jet Flames

In: High Performance Computing in Science and Engineering ‘12

Author

Listed:
  • P. Siwaborworn

    (University of Stuttgart, Institut für Technische Verbrennung)

  • A. Kronenburg

    (University of Stuttgart, Institut für Technische Verbrennung)

Abstract

The objective of the present work is to validate a large eddy simulation (LES) approach that has been coupled with a conditional moment closure (CMC) method for the computation of turbulent diffusion flames. Contrary to earlier work, we use a conservative implementation of CMC that ensures mass conservation of the fluxes across the computational cell faces. This is equivalent to a weighting of the fluxes by their probabilities at the cell faces, and it is thought that this weighting leads to a more dynamic response of the conditionally averaged moments to temporal changes induced by the large scale turbulent motion. The first application to the Sandia Flame Series D-F allows for the validation of the method, but further studies with different flame geometries and more pronounced large scale instationary effects will be needed for the demonstration of the benefits of conservative CMC when compared to the conventional (non-conservative) implementation.

Suggested Citation

  • P. Siwaborworn & A. Kronenburg, 2013. "Conservative Implementation of LES-CMC for Turbulent Jet 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 159-173, Springer.
    • Handle: RePEc:spr:sprchp:978-3-642-33374-3_14
    DOI: 10.1007/978-3-642-33374-3_14
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