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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/35945

    Title: 圓形渠道水質模式之研究
    Other Titles: A study of water quality model for open channel flow with circular cross section
    Authors: 謝瑋珍;Hsieh, Wei-chen
    Contributors: 淡江大學水資源及環境工程學系碩士班
    王士紘;Wang, Shih-hong
    Keywords: 線性解析解;聖凡納方程式;洪流演算;污染擴散;De Saint Venant equations;open channel;circular section;water quality model
    Date: 2005
    Issue Date: 2010-01-11 07:22:46 (UTC+8)
    Abstract: 本旨在建立污染物濃度擴散問題之線性解析解法。藉由此解析解可得水質模式中污染物擴散問題,提供工程師設計參考。
    The objective of this study is to develop a linearized analytical model and solve the diffusion problems of pollutants.
    The water quality model includes unsteady discharge equations and continuity equation of concentration. Because the De Saint Venant equations which contain the continuity and momentum equations, and the continuity equation of contraction are nonlinear partial differential equations, it is difficult to obtain the exact solution. In this study, a linearized analytical technique is provided, not only apply to the scheme of the nonlinear differential equations, and also apply to the coefficients of the diffusion terms of the water quality model.
    The linearized analytical method has been used in solving regular rectangular cross sections of open channel successfully. Because the circular cross section of the open channel is more complicated than other rectangular or wide rectangular cross sections, the methods used before of obtaining coefficients of the diffusion equations of discharges and concentrations are using Taylor Series expansion which exist the infinite terms of the series. Therefore, it is impossible to obtain accurate solutions. In this study, an unsteady water quality model of open channel with circular cross section is proposed. By using the linearized analytical method to modify the coefficients of the diffusion equations of and concentration, the good results are obtained.
    Appears in Collections:[水資源及環境工程學系暨研究所] 學位論文

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