頁籤選單縮合
題 名 | 突出阻塊管道流場之數值研究=Direct Numerical Simulation of a Rectangular Duck Flow with Arrays of Ribs |
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作 者 | 蔡永培; | 書刊名 | 航空太空及民航學刊. 系列B |
卷 期 | 40:1 2008.04[民97.04] |
頁 次 | 頁53-59 |
分類號 | 447.55 |
關鍵詞 | MacCormack方法; Godunov方法; 大漩渦結構; MacCormack method; Godunov method; Large eddy structure; |
語 文 | 中文(Chinese) |
中文摘要 | 本論文中以數值方法研究具有方形凸出物之管流流場及熱傳特性,採用LES(Large Eddy Simulation)方法,解三維Navier-Stokes方程組,其中交叉使用MacCormack 及Godunov Scheme 方法,並採用有限體積法(Finite Volume Method)的觀念,執行數值模擬,以獲取模型中的暫態時間與平均時間統計的流場及溫度場發展情形,可提供相關研究之參考。 |
英文摘要 | The purpose of this numerical study is to use the MacCormack and Godunov's method to analyze the physics of a rectangular duck flow with arrays of ribs. The effects of large eddy structures in the flow are simulated. Turbulence model is introduced to simulate the flow field in the duck. The effects of rib height, rib spacing, and rib shape on the heat transfer coefficient and friction factor over a wide range of Reynolds number are investigated. Performance evaluation for enhancing heat transfer in the duck is developed. |
本系統中英文摘要資訊取自各篇刊載內容。