請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/94787
標題: Simulation of Sand Drifting Based on a Two-phase Flow Approach
以二相流觀點模擬風沙飄移之初探
作者: Hong-Yi He
何閎邑
關鍵字: 飄沙
數值模擬
兩相流
Sand drifting
Numerical simulation
Two-phase flow
引用: [1] Bagnold, R.A. (1941) “The physics of blown sand and desert dunes.” Progress in Physical Geography, Vol.18, pp. 91-96. [2] Bauer, B.O. (1991) “Aeolian decoupling of beach sediments.” Association of American Geographers, Vol.8, pp. 290-303. [3] Chepil, W.S. (1945) “Dynamics of Wind Erosion the Transport Capacity of the Wind.” Soil Science, Vol. 60, pp.305-320. [4] Dong, Z.B., Liu, X.P. (2003) “The flux profile of a blowing sand cloud: a wind tunnel investigation.” Geomorphology, Vol. 49, pp.219-230. [5] Hsu, S.A. (1977) “Boundary layer meteorological research in the coastal.” Reviews of Geophysics, Vol. 61, pp. 169-191. [6] Nakashima, A.D., Rabenstein, B.D. (1979) “A fundamental study on the blown sand.” Bull Kyushu Univ, Vol.51, pp.125-183. [7] Sorensen, O.R. “A new form of the Boussinesq equations with improved linear dispersion characteristics.” Coastal Engineering, Vol. 51, pp.371-388. [8] Shuiky, A.D.(1986) “Beach and dune interactions in southeastern Australia. ” Marine Geology, Vol.48, pp. 259-284. [9] Saffman, P.G. (1965) “The lift on a small sphere in a slow shear flow.” Journal of Fluid Mechanics, Vol. 22, pp. 385-400. [10] Zingg, A.W., Woodruff, N.P. (1952) “The Physics of Wind Erosion and its Control.” Advances in Agronomy, Vol.15, pp.211-303. [11] Zhang, W., Wang. Y. (2006) “Two-phase measurements of wind and saltating sand in an atmospheric boundary layer.” Geomorphology, Vol. 8, pp.109-119. [12] 游繁結,1989,濁水溪河口飛沙量之調查與研究,農林學報第38卷,第75-104頁。 [13] 林宗儀,1999,雲林海岸風沙搬運量的估算,第20屆海洋工程研討會論文集,第443-447頁。 [14] 黃隆明、陳天慈、范姜明威,2011,台灣中部河口飛沙及揚塵之調查與研究,水土保持學會43卷,第355-362頁。 [15] 周湘俊,2002,風沙躍移試驗與模擬研究,國立交通大學土木工程研究所碩士論文。
摘要: 台灣濱海由於地處風衝地區,經常要面對的問題是強風、飛沙之危害,尤其到了冬季風速經常高達10m/s以上,因此不得不正視風沙研究的重要性。目前,國內土木工程領域利用CFD方法研究風沙共同作用在堤防建構物上還非常少見,本研究針對沿海堤防建構物之飛沙飄移,以數值模擬的方法分析不同風速與粒徑大小在強風吹過堤防後對飛沙的殘留量多寡,判斷其必要性以及效益。 近年隨著計算機軟硬體的長足進步,藉其高速運算與大量數據處理能力,使用計算流體力學方法,並採用商用套裝軟體FLUENT,利用文獻中試驗量測資料,作為數值模擬及試驗結果的基本依據,將數值模擬結果與文獻資料結果進行對比分析驗證了CFD在模擬風沙兩相流方面的可行性,進而模擬濱海堤防設計,所得成果將可作為後續工程施作之參考依據。
Since Taiwan is located in the coastal area of wind rushing, it often has to face the problem with the damage of strong winds and sand drifting, especially when winter comes, the wind velocity is often up to 10m / s or more, so we have to take the importance of sand-drifting research seriously. Currently, it is rare to see the field of civil engineering using CFD to do the research of sand-drifting combined action on construction of embankment in our country. In this research, the main purpose is to design the construction of embankment and analyze different wind velocity, particle size, and the density of sand to study the amount of sand-drifting residues after strong winds blow over the construction of embankment, and determine its necessity and effectiveness. In recent years, with the advance of hardware and software, by data processing and high speed arithmetic capability, using computational fluid dynamics (CFD), adopting FLUENT, and the experimental measurement data in the literature as a basic found of numerical simulation and experimental results. To let numerical simulation results and literature results use of comparative analysis, it verified the feasibility of using CFD in two-phase flow sand drifting, and then proceed the design of the embankment simulation. We can take the result that we got as reference for the continual works construction.
URI: http://hdl.handle.net/11455/94787
文章公開時間: 2018-10-27
顯示於類別:土木工程學系所

文件中的檔案:
沒有與此文件相關的檔案。


在 DSpace 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。