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Proceedings Paper

Application of nontraditional processing methods to transitional and turbulent boundary layer flow-noise-induced signals
Author(s): Richard A. Katz; Thomas A. Galib; Joan Cembrola
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Paper Abstract

This research applies dynamical system methods (i.e., Chaos Theory) to the processing of time sequences of transitional and turbulent wall-pressures impinging on the face of station probes mounted along the wall of an axisymmetric body of revolution during a buoyant ascent from the bottom of a deep water test basin. It is demonstrated that the turbulent pressure fluctuations for this experiment can be described as a dynamical system of sufficiently low order (i.e., less than ten degrees of freedom). This opens up several possibilities for the control of turbulence. In underwater acoustics this translates to flow noise reduction in sonar applications and to drag reduction in ship dynamics. Other potential commercial applications include control of flow through pipelines, and aerodynamic design.

Paper Details

Date Published: 18 November 1993
PDF: 9 pages
Proc. SPIE 2038, Chaos in Communications, (18 November 1993); doi: 10.1117/12.162682
Show Author Affiliations
Richard A. Katz, Naval Undersea Warfare Ctr. (United States)
Thomas A. Galib, Naval Undersea Warfare Ctr. (United States)
Joan Cembrola, Naval Undersea Warfare Ctr. (United States)

Published in SPIE Proceedings Vol. 2038:
Chaos in Communications
Louis M. Pecora, Editor(s)

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