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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/77242

    Title: Note on the generalized thermal theory for gravity currents in the deceleration phase
    Authors: Dai, Albert
    Contributors: 淡江大學水資源及環境工程學系
    Keywords: Deceleration;Detrainment;Generalized thermal theory;Gravitational convection;Gravity currents
    Date: 2010-10
    Issue Date: 2012-06-14 09:11:40 (UTC+8)
    Publisher: Amsterdam: Elsevier BV
    Abstract: The generalized thermal theory for gravitational convection, produced from instantaneous buoyancy sources on sloping boundaries, developed in Dai and Garcia (2010) is examined in this note. An assumption implicitly made therein, that detrained fluid carries no momentum, was inappropriate and the solution was not physical in special cases. The generalized thermal theory is now improved by considering the momentum carried away by detrained mixed fluid. An asymptotic velocity–distance relation for gravity currents further downslope in the deceleration phase is provided and agreement with reported experimental data is found.
    Relation: Dynamics of Atmospheres and Oceans 50(3), pp.424–431
    DOI: 10.1016/j.dynatmoce.2010.07.001
    Appears in Collections:[Graduate Institute & Department of Water Resources and Environmental Engineering] Journal Article

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