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    Direct numerical simulation of turbulent lean methane-air bunsen flame with mixture inhomogeneities

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    Type
    Conference Paper
    Authors
    Luca, Stefano cc
    Attili, Antonio
    Bisetti, Fabrizio cc
    KAUST Department
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Clean Combustion Research Center
    Date
    2016-01-01
    Permanent link to this record
    http://hdl.handle.net/10754/625546
    
    Metadata
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    Abstract
    Direct Numerical Simulations of three-dimensional spatially developing turbulent slot Bunsen burner methane/air flames are performed. Three flames are simulated; they differ for the level of premixing of the fuel inlet: one has a fully premixed inlet, the other two have a partially premixed inlet that mimic a common injection strategy in stationary gas turbines. The jet consist of a methane/air mixture with global equivalence ratio ɸ = 0.7 and temperature of 800 K. The simulations are performed at 4 atm. The grid has a resolution of 20 μ m resulting in a total of 350 million points. Supporting simulations were performed to generate the inflow conditions for the jet. The velocity field and a fuel/air field were extracted from a fully developed channel simulation with scalar injection. Chemistry is treated with a new skeletal chemical mechanism developed specifically for the DNS. The data are analyzed to study possible influences of partial premixing on the flame structure and the combustion efficiency.
    Citation
    Luca S, Attili A, Bisetti F (2016) Direct Numerical Simulation of Turbulent Lean Methane-Air Bunsen Flames with Mixture Inhomogeneities. 54th AIAA Aerospace Sciences Meeting. Available: http://dx.doi.org/10.2514/6.2016-0189.
    Sponsors
    Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST). The authors acknowledge valuable support from KAUST Supercomputing Laboratory (KSL) in the form of computational time on the CRAY XC40 “Shaheen".
    Publisher
    American Institute of Aeronautics and Astronautics (AIAA)
    Journal
    54th AIAA Aerospace Sciences Meeting
    Conference/Event name
    54th AIAA Aerospace Sciences Meeting, 2016
    ISBN
    9781624103933
    DOI
    10.2514/6.2016-0189
    Additional Links
    https://arc.aiaa.org/doi/10.2514/6.2016-0189
    ae974a485f413a2113503eed53cd6c53
    10.2514/6.2016-0189
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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