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    National Tsing Hua University Institutional Repository > 工學院  > 動力機械工程學系 > 期刊論文 >  Ignition of non-premixed wall-bounded boundary-layer flows

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/50123

    Title: Ignition of non-premixed wall-bounded boundary-layer flows
    Authors: Sheu WJ;Lin MC
    教師: 許文震
    Date: 1997
    Publisher: Taylor & Francis
    Relation: Combustion Science and Technology, Taylor & Francis, Volume 122, Issue 1 - 6, 1997, Pages 231 - 255
    Keywords: non-premixed
    boundary-layer flow
    Abstract: Ignition of non-premixed boundary-layer flows over a hot wedge-type porous wall with fuel injection is analyzed mathematically and numerically. The free-stream fluid is a diluted oxidizer such as air. An ignition criterion corresponding to the condition for lower vertical tangency on an S-shaped ignition-extinction response curve is derived by the method of large activation energy asymptotics. This ignition criterion depends on al relevant system parameters such as flow conditions, thermophysical properties (Pr, Sc-O and Sc-F) and the overall chemical kinetic mechanism of reactants. The relative sensitivity of system parameters affecting the ignition is investigated. In particular, the influence of system parameters on the transition From the kinetically controlled to the diffusionally controlled ignition mechanism is studied. Numerical calculations are also performed to compare with the asymptotic results. The asymptotic solutions are found to be in good qualitative agreement with numerical solutions.
    URI: http://www.tandf.co.uk/journals/default.asp
    Appears in Collections:[動力機械工程學系] 期刊論文

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