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Transient Jet-Interaction Combustion Modeling

Award Information

Department of Defense
Award ID:
Program Year/Program:
2002 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2002
Title: Transient Jet-Interaction Combustion Modeling
Agency / Branch: DOD / ARMY
Contract: DAAH01-02-C-R001
Award Amount: $729,965.00


"Interceptor missiles achieve high maneuverability in final phases of their mission via the use of divert/attitude control jets. Jet firings are of short duration (10-40ms) and the entire process from firing to shut-off is of concern and requires veryaccurate modeling. Aerodynamic interactions are characterized by large regions of jet-induced separation. Afterburning and particulate interactions play a significant role with concerns of combustion products reaching seeker windows and related particleobscuration/radiative heating issues. Transitional turbulence plays a major role at altitudes between 30-50km. Present high-fidelity simulation (5M grid points, 64 processors) abilities are lengthy and limited by computer resources. This proposaladdresses present limitations by advances in numerics and parallel code architecture, as well as in inclusion of pertinent physics and thermochemistry. "Smart" massively parallel adaptive domain decomposition for structured and unstructured grids andrelated numerical advances proposed will reduce run time by an order of magnitude. Advances in hypersonic pde-based turbulent transitional and pdf turbulent combustion modeling are proposed, which address major concerns in making accurate predictions.Particulate modeling entails extension of accurate Lagrangian methodology to massively parallel platforms and experiments to calibrate particle dispersion. Comparisons with LENS and other data sets

Principal Investigator:

Sanford Dash
Presient & Chief Scientis

Business Contact:

Sanford Dash
President & Chief Scienti
Small Business Information at Submission:

Combustion Research & Flow Techno
174 North Main Street, P.O. Box 1150 Dublin, PA 18917

EIN/Tax ID: 232759059
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No