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    題名: Analysis of plunging phenomena
    作者: Dai, Albert;Garcia, Marcelo H.
    貢獻者: 淡江大學水資源及環境工程學系
    關鍵詞: Density flows;Gravity currents;Initial mixing coefficient;Plunge condition;Plunging flows
    日期: 2009
    上傳時間: 2013-06-21 11:41:36 (UTC+8)
    出版者: Abingdon: Taylor & Francis Ltd.
    摘要: A dense inflow from a river into a lake or reservoir initiates gravity currents through a plunging process with intense mixing. The classic two-controlvolume theory for the analysis of plunging phenomena has been recently corrected. In particular, the design of one of the two control volumes does not follow physical principles and has undesirable implications. Herein, a generalized theoretical framework is developed for the analysis of plunging flows. Two general cases are considered to clarify the effects of the bottom slope and the inflow densimetric Froude number on the plunge condition. It is demonstrated that the relations between the dimensionless parameters characterizing the plunging phenomena in these two cases are generically different. The present theory is compared with the two-control-volume theory, the latter of which only partially explains the influence of the inflow densimetric Froude number. Good agreement between the present theory and reported data is found.
    關聯: Journal of Hydraulic Research 47(5), pp.638-642
    DOI: 10.3826/jhr.2009.3498
    顯示於類別:[水資源及環境工程學系暨研究所] 期刊論文

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