Wave Front Imaging for Dense Sprays

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$495,227.00
Award Year:
2011
Program:
STTR
Phase:
Phase II
Contract:
N00014-11-C-0497
Agency Tracking Number:
N10A-027-0410
Solicitation Year:
2010
Solicitation Topic Code:
N10A-T027
Solicitation Number:
2010.A
Small Business Information
Creare Inc.
P.O. Box 71, Hanover, NH, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
072021041
Principal Investigator:
Darin Knaus
Principal Investigator
(603) 643-3800
dak@creare.com
Business Contact:
James Barry
President
(603) 643-3800
contractsmgr@creare.com
Research Institution:
Mass Institute of Technology
Michael P Corcoran
77 Massachusetts Avenue
Bldg. E19-750
Cambridge, MA, 02139-4307
(617) 253-3906
Nonprofit college or university
Abstract
The performance of modern combustion systems used in propulsion devices (such as gas turbine main combustors, augmentors, and rockets) is largely dependent on the mixing of fuel and oxidizer. This mixing process, often involving a liquid jet emanating into a gaseous flow followed by subsequent breakup and atomization, is critically important to many performance metrics including thrust, efficiency, static stability, dynamic stability, and emissions. Despite the importance of jet breakup and atomization, the process is poorly understood and design approaches are largely based on correlations, yielding mixed results. Our poor understanding of liquid jet dynamics is partly due to the fact that the diagnostic tools currently available to study liquid jet behavior have a limited ability to visualize the dense core region of the jet. Near field dynamics occurring close to the injector typically play a dominant role in determining the fuel distribution in the combustion zone. During our Phase I project, Creare and MIT applied an emerging 3-D imaging technique called Wave Front Imaging (WFI) to sprays for the first time. In Phase II, we will optimize WFI hardware and software into a powerful research tool, and demonstrate the new diagnostic under conditions relevant to aerospace propulsion.

* information listed above is at the time of submission.

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