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RESEARCH OVERVIEW

Strong pressure pulsations within gas turbines may severely reduce the working range, exacerbate emissions, increase heat transfer to combustor walls, reduce combustion efficiency, and cause hardware/structure failures. Without successful attenuation of lean combustion instability, the concept of dry-low-emission combustion cannot be fully realized. A typical and practical control strategy is to introduce a secondary heat release rate perturbation using a high frequency fuel valve so as to nullify the positive feedback between pressure and heat release rate oscillations.


PROGRAM HIGHLIGHTS AND ACHIEVEMENTS
GRANTS AND PARTNERSHIPS
RESEARCH CONTACT
Ephraim Gutmark
ephraim.gutmark@uc.edu
Gas Dynamics and Propulsion Laboratory
University of Cincinnati
Dept. of Aerospace Engineering and Engineering Mechanics
300 Rhodes Hall
Cincinnati, OH 45221-0070
© 2005 University of Cincinnati