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題名 | Second-Order Closure Turbulence Models: Their Achievements and Limitations=二階閉合紊流模式之適用性與其限制 |
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作者 | 黃榮鑑; 趙勝裕; | 書刊名 | Proceedings of the National Science Council : Part A, Physical Science and Engineering |
卷期 | 22:6 1998.11[民87.11] |
頁次 | 頁703-722 |
分類號 | 443.1 |
關鍵詞 | 二階閉合紊流模式; Eddy viscosity models; Reynolds stress models; Near-wall turbulence models; |
語文 | 英文(English) |
中文摘要 | 現階段雖有多種不同層次之二階閉合紊流模式可供工程應用,然而,並無任何一 種紊流模式可準確的解析得所有紊流場。本文即針對各種模式之基本假設及其模式結果提出 探討,並以自由剪力紊流、壁剪力紊流、非穩定紊流場為例,以詳細說明二階閉合紊流模式 之適用性與其限制。 |
英文摘要 | At the Present time, many variations of second-order-closure turbulence models are available: However, no unique turbulence model exists which can predict satisfactorily all turbulent flows. Each turbulence model can be applied successfully to some turbulent flows but not satisfactorily to others. This paper analyzes different modeling assumptions and various proposed turbulence models. Prediction of free shear flows, wall shear flows, unsteady flows, and complex three-dimensional flows are also given to show the capabilities and limitations of the existing turbulence models. |
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