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題名 | 不同細長比載具之黏滯流場邊界層成長之數值模擬 |
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作者姓名(中文) | 翁興中; 陳以明; 張國樑; | 書刊名 | 中正嶺學報 |
卷期 | 21:2 1993.01[民82.01] |
頁次 | 頁19-26 |
分類號 | 440.137 |
關鍵詞 | 流場; 不同細長比載具; 數值; 模擬; 黏滯; 邊界層成長; 分離點; 對稱機翼; Boundary-layer growth; Separation point; Symmetric airfoil; Different slenderratio vehicles; |
語文 | 中文(Chinese) |
中文摘要 | 本文旨在探討流體經過不同細長比圓錐系及二維對稱機翼之邊界層成 長情形;以One ParameterMethod將Navier-Stokes Equations簡化後,使用4階 Runge-KuttaMethod配合Cubic Spline的方法,解不同細長比圓錐系及二維對稱機 翼之邊界層問題。計算結果顯示:本文方法預期之圓錐系載具分離點位置與理論 值相當接近。且當載具之Slender Ratio越大,也就是外型越扁時,分離點越往後 移,其最大之表面剪應力位置則越往前移。因此,本文之方法可用來快速預期二 維有非黏滯流解之邊界層成長情形及分離點位置。 |
英文摘要 | For viscous flows past the 2D vehicles of conic cross sections with different slenderratios and a 2D symmetric airfoil, the one parameter method, coupled with the fourthorder Runge-Kutta method and cubic spline method, is used to solve numerically reducedNavier-Stokes equations to analyze the boundary-layer problems. For cylindrical vehicles of different slender ratios, the results indicate that the positionof the separation point computed is rather close to those of the previous works; the largerthe slender ratio, the later the separation point and the earlier the occurrence of the maximum skin shearing stress. Thus, the present method can be employed to predict fast theboundary-layer growth and the position of the separation point of the viscous flow with thepotential flow solution. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。