A Systematic Investigation of Bluff-Body Combustion Instability

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: F49620-02-C-0048
Agency Tracking Number: F003-0369
Amount: $499,988.00
Phase: Phase II
Program: STTR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Aerosoft, Inc.
1872 Pratt Drive, Suite 1275, Blacksburg, VA, 24060
DUNS: 622308120
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Andrew Godfrey
 Senior Research Scientist
 (540) 557-1907
 godfrey@aerosft.com
Business Contact
 William McGrory
Title: President
Phone: (540) 557-1904
Email: mcgrory@aerosft.com
Research Institution
 Virginia Tech
 Uri Vandsburger
 Mechanical Engineering, 205 Randolph Hall
Blacksburg, VA, 24060
 (540) 231-4459
 Nonprofit college or university
Abstract
"The industrial gas turbine and military engine manufacturers have astrong need for accurate design tools that are capable of predictingaeroengine combustion, as well as predicting the sensitivity of the flowto a wide range of engine design parameters including actuator power andfuel-injector location. In response to this need, AeroSoft, incooperation with Virginia Tech, propose to experimentally test adynamically scaled combustor where the flame is stabilized behind abluff-body combined with a dump. Parametric studies from steady,unsteady and open-loop control operations will be used to measure thefidelity of computational simulations. An additive semi-implicitRunge-Kutta scheme and a two-parameter coupling mechanism will beimplemented to compute the bluff-body instability problem. Thesensitivity-equation method will be incorporated into a time-accurateflow solver to provide truly unsteady sensitivities to various actuatorparameters. The combined experimental/computational work provides anopportunity to further the development of distributed-parameter controlin combustor applications."

* information listed above is at the time of submission.

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