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題 名 | 使用不同紊流模式解析軸對稱體艉部流場 |
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作 者 | 蔡進發; 黃正利; 楊松祥; | 書刊名 | 國立臺灣大學工程學刊 |
卷 期 | 61 1994.06[民83.06] |
頁 次 | 頁83-113 |
分類號 | 444.7 |
關鍵詞 | 軸對稱體; 紊流模式; 厚邊界層; Axisymmetric body; Turbulence model; Thick boundary-layer; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究使用零方程式紊流模式及其兩種修正模式:幾何修正與正壓力梯度修正式與k-ε貳方程式紊流模式等四種紊流模式來計算三個軸對稱體艉部流場的特性,並和實驗量測值比較。由計算結果發現在薄邊界層中,四種紊流模式所計算的結果和實驗量測值非常吻合。但在軸對稱體艉部厚邊界層中只有壓力梯度修正零方程式模式與k-ε貳方程式模式可以得到較好的計算結果。 |
英文摘要 | Four turbulence models, Cebeci-Smith zero equation turbulence model, geometricalmodified C-S model, adverse pressure modified C-S model, and k-ε two equation model,were used to calculate the stern flow fields of three axisymmetric bodies and compared withthe measured datas. It was found that the calculated values of four turbulence models hadgood agreement with the measured data in thin boundary region. But only the adversepressure modified zero equation model and the k-ε two equation model could get goodcalculated results in thick boundary region. |
本系統中英文摘要資訊取自各篇刊載內容。