USA As Represented by Secretary of the Navy

Alia W Foley

William L Keith

An assembly is provided for determining a parametric design of a large eddy breakup device in which the assembly comprises a water tunnel turbulent pipe flow section; a large eddy breakup device ring disposed within the pipe flow section; and a wall pressure sensor array operable to detect wall pressure in the turbulent pipe flow section. Energy in a wavenumber frequency spectra of wall pressure fluctuations is redistributed via changes to the parametric design in order to minimize turbulent wall pressure fluctuations with the result of reduced flow noise and drag.

Apparatus for turbulent boundary layer control and flow noise reduction

A system is provided that employs a programmable computer on which a graphical user interface provides parametric design and analysis of pressure sensor arrays used in aero- or hydroacoustic investigations. Use of the system allows for scientific and parametric investigations of turbulent boundary layer physics, as well as iterative array design optimization. Additionally, the system including the graphical user interface facilitates comparison of the results of current models for wall pressure with past theoretical or experimental wall pressure.

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Middletown, RI, United States of America

Alia W Foley