底床質在前灘區內運移之數值模擬

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Title:	底床質在前灘區內運移之數值模擬
Other Titles:	A Numerical Model Of The Bed Load Sedimentation On The Foreshore Region
Authors:	黃信元;林意楨
Contributors:	淡江大學水資源及環境工程學系
Keywords:	數值計算;有限差分法;輸砂;前灘區;底床質;Numerical Calculation;Finite Difference Method;Sediment Transportation;Foreshore Region;Bed Load Sediment
Date:	1990-07-06
Issue Date:	2010-01-11 16:45:46 (UTC+8)
Publisher:	臺北市：中國土木水利工程學會
Abstract:	根據Meyer & Taylor(1972)的研究指出,有限振幅淺水波理論可用來描述波浪之溯升。本研究依此理論利用顯性 Lax-Wendroff的有限差分法模擬波之溯升;再由所模擬的結果配合底床質運移之經驗公式,並假設溯升及其回降(Uprush & Backwash)並不相互影響彼此之輸沙能力。依不同坡度,不同波高(bore height),不同之海底粒徑模擬底床質運移的情形。同時針對計算結果討論底床質之淨運移量與各相關因素的關係。 According to Meyer & Taylor (1972), the finite amplitude shallow water wave theory is adequate to describe the wave run-up on a beach. In this study, we use explicit Lax-Wendroff scheme to simulate finite amplitude shallow water wave running on a uniform slope beach. Assuming that the uprush and the backwash don't affect each capability to move the sediments, we examine the quantities of onshore -offshore sediments under different slopes, bore heights, and periods. Discussions on the results are presented as how to extend the future usage of this numerical model.
Relation:	第五屆水利工程研討會論文集(二)=PROCEEDINGS OF 5TH CONFERENCE ON HYDRAULlC ENGINEERING，頁753-763
Appears in Collections:	[Graduate Institute & Department of Water Resources and Environmental Engineering] Proceeding

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