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    题名: Note on the generalized thermal theory for gravity currents in the deceleration phase
    作者: Dai, Albert
    贡献者: 淡江大學水資源及環境工程學系
    关键词: Deceleration;Detrainment;Generalized thermal theory;Gravitational convection;Gravity currents
    日期: 2010-10
    上传时间: 2012-06-14 09:11:40 (UTC+8)
    出版者: Amsterdam: Elsevier BV
    摘要: 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.
    關聯: Dynamics of Atmospheres and Oceans 50(3), pp.424–431
    DOI: 10.1016/j.dynatmoce.2010.07.001
    显示于类别:[水資源及環境工程學系暨研究所] 期刊論文


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