SYSTEM AND METHOD FOR REDUCING MODAL COUPLING OF COMBUSTION DYNAMICS

PROBLEM TO BE SOLVED: To enhance the thermodynamic efficiency of combustors, enhance flame stability, and reduce undesirable emissions over a wide range of operating levels, without detrimentally impacting the life of the downstream hot gas path components.SOLUTION: A system for reducing modal coupl...

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Bibliographische Detailangaben
Hauptverfasser:	SARAH LORI CROTHERS, ZIMINSKY WILLY STEVE, CHRISTIAN XAVIER STEVENSON
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION APPARATUS COMBUSTION ENGINES COMBUSTION PROCESSES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS GAS-TURBINE PLANTS GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To enhance the thermodynamic efficiency of combustors, enhance flame stability, and reduce undesirable emissions over a wide range of operating levels, without detrimentally impacting the life of the downstream hot gas path components.SOLUTION: A system for reducing modal coupling of combustion dynamics includes structure for dithering a combustion instability frequency in at least one combustor in a plurality of combustors. To reduce modal coupling of combustion dynamics, a compressed working fluid at a constant temperature flows to a plurality of combustors; a fuel flows to a fuel injector in each of the plurality of combustors; and at least one of the temperature of the compressed working fluid flowing to the plurality of combustors or the fuel flow to the at least one fuel injector in at least one combustor in the plurality of combustors is dithered.