Efficient and Accurate Computational Framework for Injector Design and Analysis

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNM06AA58C
Agency Tracking Number: 053802
Amount: $69,995.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2005
Solicitation Topic Code: X7.01
Solicitation Number: N/A
Small Business Information
6210 Kellers Church Road, Pipersville, PA, 18947-1020
DUNS: 929950012
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Ashvin Hosangadi
 Principal Investigator
 (215) 766-1520
 hosangad@craft-tech.com
Business Contact
 Paula Schachter
Title: Business Official
Phone: (215) 766-1520
Email: schachte@craft-tech.com
Research Institution
N/A
Abstract
CFD codes used to simulate upper stage expander cycle engines are not adequately mature to support design efforts. Rapid and accurate simulations require more versatile grid frameworks to handle complex geometries of multi-element injector configurations. Turbulence models require upgrades to better predict fuel/air mixing with swirl and to predict heat flux. The innovation proposed initiates work towards developing a mature, high-fidelity simulation tool. Geometry complexity and numerical accuracy problems are addressed via a multi-element UNS grid adaptation strategy that builds upon techniques developed for valving problems and scramjet injectors. Turbulent mixing and heat transfer are upgraded by including PDE's that solve for temperature and species variance (yielding local values of Prandtl and Schmidt number), as well as swirl corrections. Finally generalized preconditioning that accounts for stiffness resulting from a large range of Mach numbers, and generalized thermodynamic formulations for real fluids will be matured to yield robust numerics with improved solution convergence. The tools and technology to be developed here would directly impact design efforts for future long duration lunar and Mars missions that require more durable long-life, light weight system components, and address methodology to operate with novel hydrocarbon fuels that may be harvested in-situ.

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

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