The Effects of Cross-Sectional Geometry on Wave-Induced Loads for Underwater Vehicles

The Effects of Cross-Sectional Geometry on Wave-Induced Loads for Underwater Vehicles

This article investigates the role that cross-sectional geometry plays on the magnitude and phase of wave-induced linear loads experienced by an underwater vehicle operating near the surface. A towing tank with wave making capabilities is used to measure the wave-induced forces and moments on variou...

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Bibliographic Details
Published in:IEEE journal of oceanic engineering Vol. 46; no. 3; pp. 765 - 784
Main Authors: Klamo, Joseph T., Yeager, Kathryn I., Cool, Colin Y., Turner, Travis M., Kwon, Young W.
Format: Journal Article
Language:English
Published: New York IEEE 01-07-2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Aspect ratio
Cross-sections
Geometry
Heaving
Load modeling
Loads (forces)
Near-surface operation
Sea surface
Shape
Towing
Towing tanks
underwater vehicle
Underwater vehicles
wave-induced loads
Wavelengths
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Summary:This article investigates the role that cross-sectional geometry plays on the magnitude and phase of wave-induced linear loads experienced by an underwater vehicle operating near the surface. A towing tank with wave making capabilities is used to measure the wave-induced forces and moments on various cross-sectional shapes experimentally. These are compared to predictions we made using a framework that can handle non-body-of-revolution geometries. In many cases, our experimental results were the opposite of the theoretical predictions. For instance, according to the predictions, for long wavelengths, the aspect ratio of a rectangle should not influence the linear heave force. However, we found that the heave force was proportional to the planform area of the rectangle. This study is a systematic investigation of the effects that changing the cross-sectional shape from a body-of-revolution to either a square, rectangular, or asymmetric shape, has on the wave-induced loads.
ISSN:0364-9059
1558-1691
DOI:10.1109/JOE.2020.3023320