Coupled Jet-Interaction Base Flow Simulation

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$69,984.00
Award Year:
2010
Program:
SBIR
Phase:
Phase I
Contract:
W31P4Q-10-C-0265
Agency Tracking Number:
A101-007-0179
Solicitation Year:
2010
Solicitation Topic Code:
A10-007
Solicitation Number:
2010.1
Small Business Information
Combustion Research and Flow Technology,
6210 Kellers Church Road, Pipersville, PA, 18947
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
929950012
Principal Investigator:
Neeraj Sinha
Vice President & Technical Director
(215) 766-1520
sinha@craft-tech.com
Business Contact:
Brian York
Vice President & Technical Director
(215) 766-1520
mike.haerle@safeinc.us
Research Institution:
n/a
Abstract
The program focuses on turbulence modeling enhancements for predicting coupled jet interaction baseflows. Unified kε turbulence model, and varied extensions that provide for scalar fluctutation models (SFM), baroclinic torque effects, realizability constrainst, vorticity/strain non-equilibrium effects, etc. will be systematically evaluated. Complimentary Large Eddy Simulations (LES) and hybrid RANS/LES simulations will provide additional turbulence statistics that are not readily/reliably measured. The LES 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 low altitude missiles with surface-mounted, fast-reacting jet thrusters located at the aft-end.

* information listed above is at the time of submission.

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