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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/84721


    Title: 高階準確對流算則在K-ε紊流模式上的應用
    Other Titles: High Order Accuracy on Flux Term in K-ε-E Turbulence Model Application
    Authors: 李世鳴;Lee, Shi-min;陳騰瑞;Chen, Teng-Jui;許文翰;Sheu, Tony W. H.
    Contributors: 淡江大學航空太空工程學系
    Keywords: MAC;K-ε紊流模式;雙層模式;FRAM;Filtering Remedy And Methodology;Tensor Viscosity Method;Turbulent Flow;Two Layer Approach;Reynolds Averaged Navier-Stokes Equation
    Date: 2001-05
    Issue Date: 2013-03-22 19:33:21 (UTC+8)
    Publisher: 臺北縣:淡江大學
    Abstract: 本文以高階準確對流數值算則配合FRAM通量限制法模擬不可壓縮紊流流場。動量方程式以原始變數的RANS方程式表示;紊流模式採用k-ε傳輸方程式結合雙層近壁模式。數值方法採用交錯式非均勻網格與MAC變數配置方式。傳輸方程式(動量以及紊流)求解程序是以空間中央差分法為基準結合時間前進離散法,引入張量黏滯法(Tensor viscosity method)使時間項亦達到二階準確,運用FRAM(Filtering remedy and methodology)通量限制法過濾偽震盪,並以壓力修正迭代程序求得同時滿足動量跟連續方程式的速度值。本文以三維拉板掏穴層流問題與紊流管道流場問題(k-ε紊流模式)測試本方法的準確度均獲得令人滿意的結果。
    This paper presents a numerical study on turbulent incompressibleflows. We adopt forward time and cetral space in transport equationsas discretisation scheme, and then we add Tensor Viscosity Method toachieve fully second order accuracy. We also introduces FRAM in orderto dampen non-physical noise due to the properties of the solutionalgorithm selected for the convective terms in the equations. Thecalculations were carried out by solving Reynolds AveragedNavier-Stokes (RANS) equations coupled with k-ε-E turbulence modeltogether with the two-layer approach in the treatment of the near- wallregion.
    Relation: 第三屆海峽兩岸航空太空學術研討會論文集,頁113-120
    Appears in Collections:[航空太空工程學系暨研究所] 會議論文

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