New Chemical Kinetics Approach for DSMC Applications to Nonequilibrium Flows

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX09CB21C
Agency Tracking Number: 074490
Amount: $599,957.00
Phase: Phase II
Program: SBIR
Awards Year: 2009
Solicitation Year: 2007
Solicitation Topic Code: A2.06
Solicitation Number: N/A
Small Business Information
6210 Keller's Church Road, Pipersville, PA, 18947-2010
DUNS: 929950012
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Richard Wilmoth
 Principal Investigator
 (215) 766-1520
 wilmoth@craft-tech.com
Business Contact
 Paula Schachter
Title: Office Manager
Phone: (215) 766-1520
Email: schachte@craft-tech.com
Research Institution
N/A
Abstract
A new chemical kinetics model and database will be developed for aerothermodynamic analyses on entry vehicles. Unique features of this model include (1) the ability to model chemical kinetics in highly nonequilibrium flows at high altitudes, (2) the ability to predict nonequilibrium dissociation without reliance on traditional continuum kinetic rate equations, and (3) the ability to model complex reactions from fundamental molecular quantum models. The model will permit analyzing high-speed, nonequilibrium flows about entry and aeroassist vehicles based on extensions to Direct Simulation Monte Carlo (DSMC) codes, and a new database will be developed for these extensions. The new approach offers potential for treating other complex nonequilibrium flow physics including ionization and radiation in a more direct manner than has been previously used and therefore offers potential improvements in accuracy. These tools will provide essential data for assessing the aerothermodynamic performance for a wide range of vehicle designs over a wide range of vehicle attitudes and flight conditions. The improved accuracy offered by our proposed chemical kinetic modeling approach offers significant benefits in the design of vehicles for both unmanned planetary missions and manned missions to the Moon and Mars.

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

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