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題名 | Some Physical Insights Inside a Lid-Driven Rectangular Cavity=頂板曳動穴流場之若干物理現象探源 |
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作者 | 蔣德普; 黃榮鑑; 許文翰; | 書刊名 | 中國機械工程學刊 |
卷期 | 19:2 1998.04[民87.04] |
頁次 | 頁231-236 |
分類號 | 440.137 |
關鍵詞 | 三維頂板曳動穴流場; 渦旋結構; 流場數值模擬; Taylor-gortler-like vortices; Laminar instability; |
語文 | 英文(English) |
中文摘要 | A flow simulation is conducted to study the vortex structure in a three -dimensional rectangular cavity. The ratio of cavity depth to width is 1:1, and the span to width ratio is 3:1. The governing equations defined on staggered grids are solved in a transient context by using a finite volume method, in conjunction with a segregated solution algorithm. The focus of the present study is placed on the influence of the end walls on the evolving cavity flow physics. The flow dyanamics of laminar instability is also discussed. To accomplish this task, the investigated Reynolds number is taken to be 1500. |
英文摘要 | 本文進行流場數位模擬,探討幾何尺度比為3:1:1 之三維頂板曳動穴流場中的渦 旋結構;數值程序係於交錯佈置網格中,循序求解經有限體積法離散之時變性流場控制方程 式。研究的重心在於物理性地闡述;主流方向之側壁面於引發三維層流不穩定機制中扮演的 角色,流場雷諾數為1500。 |
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