Rocket Exhaust Plume Secondary Smoke Formation Modeling

Award Information
Agency: Department of Defense
Branch: Army
Contract: W31P4Q-05-C-R032
Agency Tracking Number: A032-1639
Amount: $729,999.00
Phase: Phase II
Program: SBIR
Awards Year: 2004
Solitcitation Year: 2003
Solitcitation Topic Code: A03-143
Solitcitation Number: 2003.2
Small Business Information
COMBUSTION RESEARCH & FLOW TECHNOLOGY,
6210 Keller's Church Road, Pipersville, PA, 18947
Duns: 929950012
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Brian York
 Principal Scientist
 (215) 766-1520
 york@craft-tech.com
Business Contact
 Brian York
Title: Principal Scientist/Treas
Phone: (215) 766-1520
Email: york@craft-tech.com
Research Institution
N/A
Abstract
Our proposal addresses the inclusion of a secondary smoke model into a modern CFD code that is widely used for plume simulations. This will permit high fidelity simulations of dynamic, missile exhaust plume flowfields that, under certain conditions, produce a condensation cloud that can obscure the electromagnetic signals utilized for guidance and targeting. The CRAFT CFDr Navier-Stokes code used already contains much of the requisite physics (finite-rate chemistry, multiphase particulates, condensation/vaporization, etc.) in a dynamic grid framework developed to analyze extended plumes (launch to target) for tactical systems. We will implement and demonstrate the operation of an advanced secondary smoke model that will analyze condensation of water vapor on heterogeneous nuclei in the presence of HCl. The resulting droplets will be composed of either water and/or variable water/acid compositions. The modeling implements both an Eulerian particulate cloud framework as well as a Lagrangian particulate tracking framework. We will assess the potential of this modeling approach for providing high fidelity predictions that can accurately simulate secondary smoke formation in tactical missile exhaust plumes under a broad range of conditions and will perform studies for representative tactical missile scenarios.

* information listed above is at the time of submission.

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