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Laser Turbulence Measurements in the LB/TS

Award Information

Department of Defense
Defense Threat Reduction Agency
Award ID:
Program Year/Program:
1997 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Applied Research Associates, Inc.
4300 San Mateo Blvd. NE, Suite A-220 Albuquerque, NM 87110 0126
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 1997
Title: Laser Turbulence Measurements in the LB/TS
Agency / Branch: DOD / DTRA
Contract: N/A
Award Amount: $98,935.00


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.

Principal Investigator:

Neal P. Baum

Business Contact:

Small Business Information at Submission:

Applied Research Assoc., Inc.
4300 San Mateo Blvd., Ne Suite 220 Albuquerque, NM 87110

EIN/Tax ID: 850276434
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No