Transverse forces on rough cylinders in harmonic flow
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Authors
Henning, Peter John
Subjects
Transverse forces
Oscillatory flow
Harmonic flow about cylinders
Lift coefficient
Alternating force
Wave forces
Oscillatory flow
Harmonic flow about cylinders
Lift coefficient
Alternating force
Wave forces
Advisors
Sarpkaya, T.
Date of Issue
1977-03
Date
March 1977
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The transverse forces acting on smooth and sand-roughened circular cylinders immersed in an harmonically oscillating flow have been measured using a recently constructed U-shaped water tunnel.
The lift coefficients were found to depend on Keulegan-Carpenter number but independent of the Reynolds number within the range of relative roughness and Reynolds numbers tested. The results have shown that the lift coefficients for smooth cylinders at low Reynolds numbers are nearly identical with those obtained for rough cylinders at very
high Reynolds numbers at the corresponding amplitude ratios. The results have also shown that the transverse force is a significant fraction of he in-line force and must be taken into consideration in the design of structures.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.