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High Resolution Simulation of Liquid Jet Ejection and Aerosolization for Chemical/Biological Defense

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: F08630-03-C-0086
Agency Tracking Number: 021MN-2014
Amount: $749,944.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 2003
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
215 Wynn Dr., 5th Floor
Huntsville, AL 35805
United States
DUNS: 185169620
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 D. Scott Crockert
 Senior Principal Engineer
 (256) 726-4812
Business Contact
 Ashok Singhal
Title: President & Technical Dir
Phone: (256) 726-4800
Research Institution

High resolution modeling of the aerosolization process for relatively large liquid jets is needed to quantify the dispersion of hazardous chemical or biological agents from damaged/punctured containers. A second application is the prediction of thedistribution of neutralization agents injected into clouds of hazardous chemical or biological agents. A high fidelity model is needed to provide accurate prediction of droplet location, size, and velocity distributions near the injection location whichwill typically have a first order effect on the larger scale distribution of the droplet cloud.In Phase I, CFD Research Corporation (CFDRC) has demonstrated the feasibility of combining an innovative marker point approach with an advanced jet atomization model, resulting in high resolution, computationally efficient simulations that are fullycoupled between liquid and gas phases. The marker point approach provides for explicit simulation of the liquid jet core and resolution of the gas flow around the liquid jet. In Phase II, the model will be enhanced by solving the governing equations forthe arbitrary liquid core flow with consideration of jet cross-sectional deformation. Additional submodels for Large Eddy Simulation (LES) turbulence-spray interaction and droplet collision/coalescence will be included. High quality experimental data formodule validation will be obtained. Finally, the completed liquid jet, atomization, and spray module will be transferred to the Air Force for implementation in an Air Force CFD code.

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

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