• 作者： Hwang, C. J.; Lee, Eric
• 中文摘要： 本研究利用改良式有限元素法求解Oldroyd-B流體在平面4:1收縮流動現象。所建構之改良數值方法包括擬穩態法，分解方法，懲罰方式及流線上游加重法以解決當彈性增大實難以得到收斂數值解之問題。本研究所得之收斂上限相當令人滿意，證明其為有效之處理工具。
• 英文摘要： In this study a modified finite element method (FEM) is utilized to simulate the 4:1 planar entry flow of an Oldroyd-B fluid. Several numerical techniques are employed, such as the pseudo-transient method, the decoupled approach, the penalty formulation, and streamline upwinding skill, to facilitate calculation of convergent numerical solutions when fluid elasticity is increased. This procedure yields more satisfactory results in that the upper limit of the Weissenberg number, where a convergent solution is obtainable, is much higher.
• 中文關鍵字： 有限元素法; 流體; 平面進入流; 黏彈性
• 英文關鍵字： Finite Element Method; Fluid; Planar Entry Flow; Viscoelasticity