A Systematic Investigation of Bluff-Body Combustion Instability

Period of Performance: 07/24/2002 - 07/24/2004

$500K

Phase 2 STTR

Recipient Firm

Aerosoft, Inc.
2000 Kraft Drive Suite 1400
Blacksburg, VA 24060
Principal Investigator
Firm POC

Research Institution

Virginia Polytechnic Institute
Sponsored Programs 0170
Blacksburg, VA 24061
Institution POC

Abstract

The industrial gas turbine and military engine manufacturers have a strong need for accurate design tools that are capable of predicting aeroengine combustion, as well as predicting the sensitivity of the flow to a wide range of engine design parameters including actuator power and fuel-injector location. In response to this need, AeroSoft, in cooperation with Virginia Tech, propose to experimentally test a dynamically scaled combustor where the flame is stabilized behind a bluff-body combined with a dump. Parametric studies from steady, unsteady and open-loop control operations will be used to measure the fidelity of computational simulations. An additive semi-implicit Runge-Kutta scheme and a two-parameter coupling mechanism will be implemented to compute the bluff-body instability problem. The sensitivity-equation method will be incorporated into a time-accurate flow solver to provide truly unsteady sensitivities to various actuator parameters. The combined experimental/computational work provides an opportunity to further the development of distributed-parameter control in combustor applications.