Accelerated Lattice Boltzmann-Monte Carlo Method for Simulation of Rarefied Material Dynamics

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: DAAH0103CR261
Agency Tracking Number: 03SB1-0017
Amount: $98,947.00
Phase: Phase I
Program: SBIR
Awards Year: 2003
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
8130 Boone Blvd., Suite 500, Vienna, VA, 22182
DUNS: 107928806
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Christopher Teixeira
 Principal Engineer
 (703) 448-1116
Business Contact
 Doss Halsey
Title: Vice President
Phone: (703) 448-1116
Research Institution
The feasibility of a new approach that will accelerate the modeling of problems involving rarefied gas dynamics is established. The proposed hybrid approach solves the Boltzmann equation directly using a carefully designed discrete-velocity model and adiscrete Monte Carlo collision process with several extensions that accelerates its computational capability in comparison with direct simulation Monte Carlo (DSMC). Moreover, in the low Knudsen number limit, the new method seamlessly becomes an efficientsimulator of continuum flows called the Lattice Boltzmann method (LBM). The end product will be a new simulation tool with significantly improved computational efficiency for combination continuum/rarefied flow applications. The developed technology willenable significantly higher fidelity and more accurate simulation of rarefied gas dynamics, a critical element in the design of components in numerous defense and civilian applications. Potential applications include improved adaptive flow control inmicrofluidic structures, improved material fabrication techniques, and improved modeling of physical phenomena entailed in upper atmospheric flight.

* information listed above is at the time of submission.

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