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題 名 | Simulation of Ground Water Mounding:(Ⅰ).Theoretical Derivation and Discussion--Technical Note=地下水丘模擬:(1)理論推尋及討論 |
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作 者 | 蔡存孝; 江明義; | 書刊名 | 農業工程學報 |
卷 期 | 41:3 1995.09[民84.09] |
頁 次 | 頁68-77 |
分類號 | 443.67 |
關鍵詞 | 地下水丘; 張量; 自由及移動邊界; Ground water mounding; Tensor; Free and moving boundary; |
語 文 | 英文(English) |
中文摘要 | 本文利用一般非直角系座標模擬地下水丘以解決其所產生之自由及移動邊界問題。非直角系座標下之控制方程式以張量表之,因此,因為變形而產生之效應可被考慮。計算過程包括製造格子點、將直角系座標(physical domain)轉成非直角系座標(computational domain)、最後在非直角系座標下解問題,而得到精確且合理之關鍵在於格子點。本文推導出possion type equation在非直角系座標下之張量形式,其用Hele-Shaw Model驗證之結果將於下篇文章敘述之。 |
英文摘要 | Simulation of ground water mounding uses the computation in the generalized curvilinear coordinate to resolve the free and moving boundary problem. The general form of governing equation and boundary conditions of the curvilinear coordinate are presented by tensor so that the stretching and the rotation and/or angular deformation effects can be accounted. The procedure involves generating a grid in the physical domain, then transforming the physical domain (Cartesian coordinate) into the computational domain (generalized curvilinear coordinate), and finally solving the problem in the computational domain. Grid generation for the physical domain is a key step to obtain accurate, reasonable solutions. This paper derived a complete tensor form of the generalized curvilinear coordinate for a passion type equation. The verification by Hele-Shaw model is stated in the following paper. |
本系統中英文摘要資訊取自各篇刊載內容。