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Novel Methods for Sensor Quieting in Turbulent Flows

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: N10PC20089
Agency Tracking Number: 09ST2-0024
Amount: $98,831.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: ST092-004
Solicitation Number: 2009.B
Solicitation Year: 2009
Award Year: 2010
Award Start Date (Proposal Award Date): 2010-08-13
Award End Date (Contract End Date): 2010-08-15
Small Business Information
9500 Innovation Drive
Manassas, VA 20110
United States
DUNS: 945837219
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Jim Powers
 Principal Investigator
 (801) 359-4566
Business Contact
 Christine Sigety
Title: Manager of Business Support
Phone: (703) 368-6107
Research Institution
 University of Utah
 Todd Nilsen
Office of Sponsored Projects 1471 Federal Way
Salt Lake City, UT 84102
United States

 (801) 581-8948
 Nonprofit College or University

The Progeny – University of Utah team proposes a new approach for flow noise reduction to improve acoustic sensor performance. Our proposal is to investigate the ability of controlling the turbulent flow by utilizing acceleration which makes the flow locally laminar. Our proposed method of achieving acceleration is to send the flow around a concave surface, by adding a “two-dimensional bump” to an otherwise flat wall. Wall pressure versus distance measurements have shown that the pressure decreases in the first part of the concavity of the bump, and becomes normal again (fully turbulent) downstream. This means that the total amount of flow noise reaching a sensor below the bump will be less than if the sensor were under a flat wall, with turbulence along its entire length.

* Information listed above is at the time of submission. *

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