Experimental Investigation of Geometric Parameters Effect on Energy Harvesting from FIV in Bluff Bodies

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مطالعه تجربی تاثیر پارامتر های هندسی در میزان انرژی قابل برداشت از نوسان سیلندر در جریان کم سرعت

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 52787 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Ebrahimi, Abbas
Abstract:
The purpose of this research is to design and construct a test stand for the study of the kinematic and flow pattern of bluff bodies oscillating motion due to the induction of wake vortices. An experimental investigation was conducted to explore the effect of bluff bodies cross section to optimize the amount of electrical energy withdraw by electromagnetic harvester. The tests are carried out on cylinders with square section and rectangular sections with a length to width ratio of 1/2 and 2/1 and height of 50 cm, at speeds of 5 to 35 m/s in eiffel type wind tunnel. The effect of cylinder cross-section on the amount of energy harvested showed that the amplitude of oscillation in square-shaped cross section is higher than other sections. No significant changes were observed in the frequency of fluctuations, so the amount of energy extracted from the fluctuations of the cylinder with the square section is greater than the maximum amount of energy extracted from the other two sections
Keywords:
Energy Harvesting ; Oscillations ; Vorticity ; Wakes ; Experimental Studies ; Low Speed Flows

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