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Laser Turbulence Measurements in the LB/TS

Award Information
Agency: Department of Defense
Branch: Defense Threat Reduction Agency
Contract: N/A
Agency Tracking Number: 36361
Amount: $98,935.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 1997
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
4300 San Mateo Blvd., Ne Suite 220
Albuquerque, NM 87110
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Neal P. Baum
 (505) 846-0487
Business Contact
Phone: () -
Research Institution

Turbulence of gas flows by its very nature is one of the most difficult things to model and measure. We propose to develop a new way of measuring the turbulence and to compare these measurements to predictions using the k-epsilon model. Typical measurements, in the past, use smoke, Schlierin or shadow graph techniques to visually infer turbulence characteristics. These features are either motion patterns or an average density across a slice of the turbulent flow. The technique that we propose to develop uses a laser that pulses at rates of up to 8 kHz with 30 ns pulse widths. These laser pulses would then be utilized to illuminate seeds in the flow and provide the method of framing pictures on a streak camera film. These pictures could then be employed to track the displacement-time history of the seed. the sequence of photographs would provide velocity-time histories at given points in the turbulent flow that could then be compared to the computer model. Military uses: distribution of chemical and biological agents from structures. Civilian Uses: Aircraft noise, aerodynamics and the distribution of pollutants from smoke stacks.

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

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