Transient, Rocket Exhaust Plume Modeling for Static Test Analyses

Award Information
Agency:
Department of Defense
Branch
n/a
Amount:
$729,998.00
Award Year:
2011
Program:
SBIR
Phase:
Phase II
Contract:
W31P4Q-11-C-0259
Award Id:
n/a
Agency Tracking Number:
A2-4573
Solicitation Year:
2006
Solicitation Topic Code:
A06-020
Solicitation Number:
2006.2
Small Business Information
Combustion Research and Flow Technology, (Currently Combustion Research and Flow Technology)
6210 Kellers Church Road, Pipersville, PA, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
929950012
Principal Investigator:
Brian York
Principal Scientist and T
(215) 766-1520
york@craft-tech.com
Business Contact:
Sanford Dash
Chief Scientist and Presi
(215) 766-1520
dash@craft-tech.com
Research Institution:
Stub




Abstract
Our proposal addresses the high fidelity modeling of transient rocket exhaust plumes in a static test environment. Static testing provides a practical means of obtaining plume signature data to support model validation. However, existing CFD codes routinely used for plumes in flight cannot accurately address many of the complexities associated with a static test environment. Our starting point will be an advanced state of the art Navier-Stokes code that contains much of the requisite physics (chemistry, multiphase particulates, condensation, etc.) and operates in a dynamic grid framework. In Phase I, we investigated the use of all-speed preconditioning techniques for mixed regions of high and low speed flow. A technical approach was formulated to efficiently model rocket motors exhausting into quiescent environments including the effects of the test stand, surrounding terrain, prevailing wind, physical phenomena such as buoyancy, and secondary smoke formation. In Phase II we will incorporate models simulating these effects into our Navier Stokes code and analyze realistic static test firing problems. Work on the development of hybrid RANS/LES turbulence models for static test analyses will also be conducted to more accurately model transient turbulent structures and multiphase particulate phenomena present in these complex transient flowfields.

* information listed above is at the time of submission.

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