| Summary: | 碩士 === 國立高雄師範大學 === 物理學系 === 99 === In this thesis the simulations of dynamic behaviors of single fiber in laminar flow between parallel plates have been carried out. The present work focuses on the simulations of dynamic effect on the fiber under various fluid flow viscosities and different fiber flexibility effect on the fiber dynamic behaviors. All of the simulations are assumed the flow has an initial constant velocity and the gravity effect is ignored. For a given fiber flexural rigidity, as the flow viscosity is large and the Reynolds number is low, the dynamic movement of the fiber is stable, the fluid flow is laminar flow. Conversely, when the flow viscosity is smaller and the Reynolds number is higher, the dynamic movement of the fiber is instable, the fluid flow is becomes turbulent flow. In the fixed viscosity and Reynolds number, as the flexibility of fiber is larger, the offset distance of mass center from original setting is small and the rotation of fiber is slower. Conversely, when the flexibility of fiber is smaller, that is the fiber is more softly, the offset distance of mass center is larger, and the rotation is fast.
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