Design and Dynamic Analysis of Oscillating Hydrofoil with Bar Linkage
Date Issued
2014
Date
2014
Author(s)
Chen, Meng-Fan
Abstract
The research is to combine a linkage and a symmetry hydrofoil, which is integrated with field of mechanism and classical oscillating hydrofoil. The purpose of this study is to design a electricity generator which can continue oscillating without control systems on hydrofoils, or makes the electric power consumption lower. Under the research, we discuss the performance and the dynamic behavior of the electricity generator.
First, we discuss the fundamental principle and mechanism of classical oscillating hydrofoil. And design a generator which combines a four-bar linkage and a symmetry hydrofoil, try to calculate the state of force on hydrofoil in the fluid field. Finally, proving that a generator which combines a four-bar linkage and a symmetry hydrofoil cannot oscillate continuously by a symmetry hydrofoil without flip.
Moreover, design a generator which combines a four-bar linkage and a symmetry hydrofoil with flip. Calculate the state of force on generator using two-dimensional computational fluid dynamics. Finally, find out the result and compare with the classical oscillating hydrofoil, proving that a generator which combines a four-bar linkage and a symmetry hydrofoil with flip can oscillate continuously.
Furthermore, base on the theory of mechanism, using the state of force and torque, to design a generator which combines a five-bar linkage with a slider and a symmetry hydrofoil, and to discuss the mechanism characteristic which affects by different parameters in the fluid field. Finally, base on the theory of fluid dynamics, calculate the state of force and torque, find out the result and compare with the classical oscillating hydrofoil, try to find out the parameters of the design without control systems on hydrofoil.
Subjects
往復式發電機
對稱型機翼
控制系統
計算流體力學
Type
thesis
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