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    Large-Eddy Simulation of Flow and Convective Heat Transfer in a Gas Turbine Can Combustor With Synthetic Inlet Turbulence

    Source: Journal of Engineering for Gas Turbines and Power:;2012:;volume( 134 ):;issue: 007::page 71503
    Author:
    Sunil Patil
    ,
    Danesh Tafti
    DOI: 10.1115/1.4006081
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Large eddy simulations of swirling flow and the associated convective heat transfer in a gas turbine can combustor under cold flow conditions for Reynolds numbers of 50,000 and 80,000 with a characteristic Swirl number of 0.7 are carried out. A precursor Reynolds averaged Navier-Stokes (RANS) simulation is used to provide the inlet boundary conditions to the large-eddy simulation (LES) computational domain, which includes only the can combustor. A stochastic procedure based on the classical view of turbulence as a superposition of the coherent structures is used to simulate the turbulence at the inlet plane of the computational domain using the mean flow velocity and Reynolds stress data from the precursor RANS simulation. To further reduce the overall computational resource requirement and the total computational time, the near wall region is modeled using a zonal two layer model (WMLES). A novel formulation in the generalized co-ordinate system is used for the solution of effective tangential velocity and temperature in the inner layer virtual mesh. The WMLES predictions are compared with the experimental data of Patil et al. (2011, “Experimental and Numerical Investigation of Convective Heat Transfer in Gas Turbine Can Combustor,” ASME J. Turbomach., 133 (1), p. 011028) for the local heat transfer distribution on the combustor liner wall obtained using robust infrared thermography technique. The heat transfer coefficient distribution on the liner wall predicted from the WMLES is in good agreement with experimental values. The location and the magnitude of the peak heat transfer are predicted in very close agreement with the experiments.
    keyword(s): Flow (Dynamics) , Heat transfer , Turbulence , Eddies (Fluid dynamics) , Reynolds number , Combustion chambers , Gas turbines AND Convection ,
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      Large-Eddy Simulation of Flow and Convective Heat Transfer in a Gas Turbine Can Combustor With Synthetic Inlet Turbulence

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/148793
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    • Journal of Engineering for Gas Turbines and Power

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    contributor authorSunil Patil
    contributor authorDanesh Tafti
    date accessioned2017-05-09T00:50:10Z
    date available2017-05-09T00:50:10Z
    date copyrightJuly, 2012
    date issued2012
    identifier issn1528-8919
    identifier otherJETPEZ-27198#071503_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/148793
    description abstractLarge eddy simulations of swirling flow and the associated convective heat transfer in a gas turbine can combustor under cold flow conditions for Reynolds numbers of 50,000 and 80,000 with a characteristic Swirl number of 0.7 are carried out. A precursor Reynolds averaged Navier-Stokes (RANS) simulation is used to provide the inlet boundary conditions to the large-eddy simulation (LES) computational domain, which includes only the can combustor. A stochastic procedure based on the classical view of turbulence as a superposition of the coherent structures is used to simulate the turbulence at the inlet plane of the computational domain using the mean flow velocity and Reynolds stress data from the precursor RANS simulation. To further reduce the overall computational resource requirement and the total computational time, the near wall region is modeled using a zonal two layer model (WMLES). A novel formulation in the generalized co-ordinate system is used for the solution of effective tangential velocity and temperature in the inner layer virtual mesh. The WMLES predictions are compared with the experimental data of Patil et al. (2011, “Experimental and Numerical Investigation of Convective Heat Transfer in Gas Turbine Can Combustor,” ASME J. Turbomach., 133 (1), p. 011028) for the local heat transfer distribution on the combustor liner wall obtained using robust infrared thermography technique. The heat transfer coefficient distribution on the liner wall predicted from the WMLES is in good agreement with experimental values. The location and the magnitude of the peak heat transfer are predicted in very close agreement with the experiments.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleLarge-Eddy Simulation of Flow and Convective Heat Transfer in a Gas Turbine Can Combustor With Synthetic Inlet Turbulence
    typeJournal Paper
    journal volume134
    journal issue7
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4006081
    journal fristpage71503
    identifier eissn0742-4795
    keywordsFlow (Dynamics)
    keywordsHeat transfer
    keywordsTurbulence
    keywordsEddies (Fluid dynamics)
    keywordsReynolds number
    keywordsCombustion chambers
    keywordsGas turbines AND Convection
    treeJournal of Engineering for Gas Turbines and Power:;2012:;volume( 134 ):;issue: 007
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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