Simultaneous Determination of Drag Coefficient and Added Mass

The drag coefficient and added mass (hydrodynamic mass) are the essential parameters for the dynamics analysis of submerged objects with mobility such as bio-mimicking fish robots or underwater vehicles. The shape dependence of these parameters makes them difficult to have good theoretical approxima...

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Bibliographic Details
Published inIEEE journal of oceanic engineering Vol. 36; no. 3; pp. 422 - 430
Main Authors Chan, Wai Leung, Kang, Taesam
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2011
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Added mass
Approximation
Computational fluid dynamics
Drag
drag coefficient
Drag coefficients
Dynamic tests
Equations
Fish
Force
Friction
hydrodynamic mass
Marine
Mathematical analysis
Mathematical model
Mathematical models
Pulleys
Robots
Trajectory
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Summary:The drag coefficient and added mass (hydrodynamic mass) are the essential parameters for the dynamics analysis of submerged objects with mobility such as bio-mimicking fish robots or underwater vehicles. The shape dependence of these parameters makes them difficult to have good theoretical approximations and the parameters should be determined either numerically or experimentally. Different experiments have been proposed to obtain either the drag coefficient or added mass. This paper presents a new method to simultaneously determine the drag coefficient and added mass from a simple and economic experiment and a numerical identification procedure. An experiment was carried out to demonstrate the method and the identification error was studied analytically and numerically for some experimental uncertainties.
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ISSN:0364-9059
1558-1691
DOI:10.1109/JOE.2011.2151370