Results from a numerical investigation of one-dimensional, laminar flame quenching with constant and time-dependent pressure variations are reported herein. A description of flame quenching and post-flame oxidation processes for the global reaction A + B → C is obtained from a solution of a simplified form of the non-linear conservation of mass, momentum and energy equations in a planar flow field. These equations were reduced to finite difference form and the time-dependent pressure was input via either an integrated form of the energy equation or a third-order polynomial law. Numerical calculations were performed at constant pressure, combustion bombtype conditions and under rapid decompression during quenching. One-dimensional head-on quenching distances, hydrocarbon concentration levels and gas properties were obtained for a variety of stoichiometric values in a propane/airtype mixture. Results presented indicate that the quenching distance is primarily controlled by the thermal conduction process; however, residual hydrocarbon levels are intimately related to post-quenching diffusion, oxidation kinetics and the during which they occur.


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    Title :

    Laminar Head-On Flame Quenching-A Theoretical Study


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1978 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1978



    Publication date :

    1978-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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