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題 名 | 初始深度對模擬堰流之影響 |
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作 者 | 施清吉; | 書刊名 | 農業工程學報 |
卷 期 | 40:2 1994.06[民83.06] |
頁 次 | 頁6-17 |
分類號 | 443.1 |
關鍵詞 | 渠流; 自由面; 流動模擬; Channel flows; Free surface; Flow simulation; |
語 文 | 中文(Chinese) |
中文摘要 | 使用MAC方法並配合高度函數模擬堰流,初始速度為左邊界的輸入定值,計有0.2、0.4、0.6、0.8、1.0、1.2 與1.4公尺/秒等八種情況,大約相當於上游福祿數介近於 0.05與0.3之間;而初始深度也為在邊界的輸入值,但為浮動的。基於模擬流況趨近於定量流、各斷面流量、堰後下自由面高度與流量係數之條件與比較,分析初始深度對模擬結果之影響,且分析其適當範圍。 |
英文摘要 | The weir flow is simulated by the method of Marker and Cell, abbreviated as MAC, with height functions. At the left boundary eight initial depths are used, they are 0.2, 0.4, 0.6, 1.0, 1.2 and 1.4 meter/second, with the Froude number approximately ranging from 0.05 to 0.3. In the course of simulation the initial velocity remains unchanged, while the initial depth will be adjusted and finally tends to a nearly fixed value. Based upon the requirement that the simulated flow will tend to a steady flow and comparisons of numerical results of sectional discharges, lower water surface profile after weir and the discharge coefficient, effects of the initial depth on simulated results are analyzed in order to obtain the appropriate range for the initial depth. |
本系統中英文摘要資訊取自各篇刊載內容。