透過您的圖書館登入
IP:3.148.241.79
  • 學位論文

二維淺水波在不規則底床運行之研究

The Study of Two Dimensional Shallow Water Waves on the Uneven Bed

指導教授 : 鄧志浩
若您是本文的作者,可授權文章由華藝線上圖書館中協助推廣。

摘要


本文旨為闡述使用最小平方有限元素法(LSFEM)求解一考慮底床坡度變化與摩擦力的二維淺水波(Shallow Water)方程式,並進行數種不同明渠流場之水面變化的模擬,並加以比較使用不同模式下之結果差異情形,以提供未來研究與工程評估之參考。 本文內容分為四部分。一、探討水流通過一無限高圓柱其流場變化情形,並以不同渠道坡度與底床摩擦力分析其造成影響之差異,利用此結果分析在多個圓柱之橋墩其流場之變化。二、模擬水流通過一圓弧型之底床突起物(hump)其表面水深之變化情形。三、部分潰壩(partial dam break)之模擬。最後為模擬一座落在山谷地形上的圓形潰壩(circular dam break)問題。 結果顯示使用最小平方有限元素法所得到的結果與其他數值方法得到的結果吻合,其可以有效的模擬部分潰壩問題和多變地形上的水流變化。.

並列摘要


In this paper, we conducted a scheme of least-squares finite element method (LSFEM) to solve two-dimensional Shallow Water equation. Simulation of the water level changes in different kinds of flowfields: 1. Flow around a cylinder with different bed slope and friction. 2. Flow around a hump. 3. Partial dam break. 4. Sudden collapse of a circular water supply reservoir in a valley. The results show that the scheme is in good agreement with analytical solution and numerical results of other method. The LSFEM can effectiv- -ely simulate the two-dimensional flow fields of arbitrary topography.

參考文獻


33. 陳建富(2002),“單階自由跌水之數值模擬,” 私立中原大學土木工程學系碩士學位論文.
novtype scheme in finite volumes for the 2D shallow-water equation,” Int. J. Mumer. Methods in Fluids, 16, 489-505.
3. Bermudez Alfredo, Alain Dervieux, Jean-Antoine Desideri, M. Elena Vazquez.(1998), “Upwing Scheme for the two-dimensional shallow water equations with variable depth using unstructured meshes,” Comput. Method Appl. Mech. Engrg. Vol.155, 49-72.
4. Bradford, Scott F. and Sanders, Brett F.(2002) “Finite-Volume Model for Shallow-Water Flooding of Arbitrary Topography,” Journal of Hydraulic Engineering, March. 289-298.
5. Causon, D. M., Mingham, C. G., and Ingram, D. M. (1999), “Advances in calculation methods for supercritical flow in spillway channels, ” Journal of Hydraulic Engineering, Vol.125, NO.10, October, 1039-1050.

被引用紀錄


孫銘寬(2006)。淺水波方程式應用於彎曲河道之數值模擬〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu200600544
陳啟宏(2005)。以最小平方有限元素法探討雙橋墩流場變化〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/cycu200500054
陳宏顏(2008)。山谷中潰壩衝擊水工結構物之現象探討〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840/CYCU.2008.00396
曾仁彥(2008)。水庫異重流運移過程之數值模擬〔碩士論文,長榮大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0015-2501200810301300

延伸閱讀