Missile Interceptor Base Flow Simulation

Award Information
Agency: Department of Defense
Branch: Army
Contract: W31P4Q-09-C-0418
Agency Tracking Number: A091-006-0057
Amount: $69,988.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solicitation Year: 2009
Solicitation Topic Code: A09-006
Solicitation Number: 2009.1
Small Business Information
Combustion Rese
6210 Kellers Church Road, Pipersville, PA, 18947
DUNS: 929950012
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Neeraj Sinha
 Vice President & Technica
 (215) 766-1520
 sinha@craft-tech.com
Business Contact
 Sanford Dash
Title: President & Chief Scienti
Phone: (215) 766-1520
Email: dash@craft-tech.com
Research Institution
N/A
Abstract
The program focuses on turbulence modeling enhancements for predicting hypersonic interceptor base flows, using existing benchmark data sets. Unified kε and algebraic stress (EASM) turbulence models, shown to adequately simulate fundamental high-speed jet data sets and now being validated with PIV data sets in a NASA Marshall program focused on baseflows, will be used. Complimentary Large Eddy Simulations (LES) will provide additional turbulence statistics that are not readily/reliably measured. The data will support enhancements to the CRAFT Tech unified k-ε turbulence model. The impact of employing a variable turbulent Prandtl and Schmidt number methodology, based on a two-equation scalar variance framework, will be considered for reacting and non-reacting base flows. The effort will lead to extended validation of enhanced turbulence modeling tools, increased reliability of base drag & heat flux predictions and fills a major gap at the US Army by improving upon base region simulation capabilities required for design of hypersonic interceptors. The program will also conduct initial planning for acquisition of “high-quality” baseflow data in the 12”X12” tunnel at the National Center for Physical Acoustics (NCPA), utilizing non-intrusive diagnostics.

* information listed above is at the time of submission.

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