Publication:
Bottom and surface proximity effects on the added mass of Rankine ovoids.

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Authors
Fickel, Monty George.
Subjects
added mass
virtual mass
Rankine ovoids
Advisors
Sarpkaya, T.
Date of Issue
1973-12
Date
December 1973
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The free-surface and bottom-proximity effects on the added mass of Rankine ovoids of various length-to-diameter ratios were experimentally investigated by vertically oscillating the ovoids normal to their major axis. The results have shown that the bottom-proximity increases the added mass and the free-surface proximity decreases it. Furthermore, the added mass increases with increasing length-to-diameter ratio, i.e., for more cylinder-like ovoids, and approaches that predicted analytically for an infinitely long cylinder. Finally, an appropriate analysis based on the strip-method and the cylinder results has shown that the bottom-proximity effect on the added mass of Rankine ovoids may be predicted with sufficient accuracy. The prediction of the surface-proximity effect requires more refined methods.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Other Units
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.
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