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

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$98,947.00
Award Year:
2003
Program:
SBIR
Phase:
Phase I
Contract:
DAAH0103CR261
Award Id:
63467
Agency Tracking Number:
03SB1-0017
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
8130 Boone Blvd., Suite 500, Vienna, VA, 22182
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
107928806
Principal Investigator:
Christopher Teixeira
Principal Engineer
(703) 448-1116
cmt@isl-inc.com
Business Contact:
Doss Halsey
Vice President
(703) 448-1116
jdh@isl-inc.com
Research Institution:
n/a
Abstract
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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