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UBC Theses and Dissertations
The measurement of vortex induced effects in flow past stationary and oscillating circular and D-section cylinders Feng, C.C.
Abstract
Experiments were performed in a wind tunnel on 3-inch diameter circular and D-section cylinders. A detailed investigation of the vortex shedding frequency, displacement amplitude, and the phase angle between the fluctuating pressure and the displacement signals of both circular and D-section cylinders was made in the "capture" region. These phenomena were investigated under various damping levels using magnetic dampers. Fluctuating surface pressures on a circular cylinder were measured along one half of the circumference at 11 sections selected along the span. The resulting sectional fluctuating lift coefficients as well as the total lift coefficients were obtained by integration for several wind speeds for both stationary and oscillating cylinders. Interesting to note are the vortex line inclination angles obtained from fluctuating surface pressure correlation. Using linearized hot wire anemometers, spanwise wake velocity correlation functions were measured and correlation lengths computed.
Item Metadata
Title |
The measurement of vortex induced effects in flow past stationary and oscillating circular and D-section cylinders
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1968
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Description |
Experiments were performed in a wind tunnel on 3-inch diameter circular and D-section cylinders. A detailed investigation of the vortex shedding frequency, displacement amplitude, and the phase angle between the fluctuating pressure and the displacement signals of both circular and D-section cylinders was made in the "capture" region. These phenomena
were investigated under various damping levels using magnetic dampers. Fluctuating surface pressures on a circular cylinder were measured along one half of the circumference at 11 sections selected along the span. The resulting sectional fluctuating lift coefficients as well as the total lift coefficients were obtained by integration for several wind speeds for both stationary and oscillating cylinders. Interesting to note are the vortex line inclination angles obtained from fluctuating surface pressure correlation. Using linearized hot wire anemometers, spanwise wake velocity correlation functions were measured and correlation lengths computed.
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Genre | |
Type | |
Language |
eng
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Date Available |
2011-06-10
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0104049
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.