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.
關聯:
第五屆水利工程研討會論文集(二)=PROCEEDINGS OF 5TH CONFERENCE ON HYDRAULlC ENGINEERING,頁753-763