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Quadrature Moments Method for the Simulation of Turbulent Reactive FlowsA sub-filter model for reactive flows, namely the DQMOM model, was formulated for Large Eddy Simulation (LES) using the filtered mass density function. Transport equations required to determine the location and size of the delta-peaks were then formulated for a 2-peak decomposition of the FDF. The DQMOM scheme was implemented in an existing structured-grid LES solver. Simulations of scalar shear layer using an experimental configuration showed that the first and second moments of both reactive and inert scalars are in good agreement with a conventional Lagrangian scheme that evolves the same FDF. Comparisons with LES simulations performed using laminar chemistry assumption for the reactive scalar show that the new method provides vast improvements at minimal computational cost. Currently, the DQMOM model is being implemented for use with the progress variable/mixture fraction model of Pierce. Comparisons with experimental results and LES simulations using a single-environment for the progress-variable are planned. Future studies will aim at understanding the effect of increase in environments on predictions.
Document ID
20040031723
Acquisition Source
Headquarters
Document Type
Other
Authors
Raman, Venkatramanan (Stanford Univ. Stanford, CA, United States)
Pitsch, Heinz (Stanford Univ. Stanford, CA, United States)
Fox, Rodney O. (Iowa State Univ. of Science and Technology Ames, IA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Center for Turbulence Research Annual Research Briefs 2003
Subject Category
Fluid Mechanics And Thermodynamics
Funding Number(s)
CONTRACT_GRANT: NCC2-1371
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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