頁籤選單縮合
題 名 | 流體黏彈性在楔形物體表面熱流場效應 |
---|---|
作 者 | 許政行; 陳啟生; 鄧治東; | 書刊名 | 中原學報 |
卷 期 | 20 1991.12[民80.12] |
頁 次 | 頁74-85 |
分類號 | 440.137 |
關鍵詞 | |
語 文 | 中文(Chinese) |
中文摘要 | 木文研究分析有關非牛頓二階黏彈性流體的 Falkner-Skan 流場。探討當流體流經一與流場主流方向成對稱的楔形物體時,因物體形狀因子β及在物體表面上流體有射出(Injection)或吸入(Suction)對流場所造成之效應。引入流線函數Ψ於二階黏彈流體之邊界層方程式,並對彈性項以冪次級數展開,藉由相似轉換分析,得到各冪次的非線性常微分方程式。再經由四階Runge-Kutta積分法及射值法(Shooting Method)求解。結果顯示出邊界層內速度分佈受彈性參數ε,形狀因子β射出或吸入率參數C的影響極大。而邊界層內溫度分佈亦由能量方程式,經由相同的解析,顯示出β,ε,C.及普朗得數(Prandtl Number) Pr值與對流熱傳導的效應。 |
英文摘要 | The effects of the fluid viscoelasticity on the wedge flow were studied. The combined effects of the shape factor, injection or suction rates and viscoelasticity were analysed by the series expansion method, similarity transformation, 4th order Runge-Kutta integration method and shooting method. The stream function was introduced into the momentum boundary layer equations of second grade fluid to eIiminate the pressure terms. The results indicated that the velocity profiles, temperature distributions, friction factor and heat transfer are greatly affected by the elastic parameter, shape factor, Prandtl number and injection or suction rates. |
本系統中英文摘要資訊取自各篇刊載內容。