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Title: Combustor oscillation attenuation via the control of fuel-supply line dynamics

Abstract

Combustion oscillation control in combustion systems using hydrocarbon fuels is provided by acoustically tuning a fuel-delivery line to a desired phase of the combustion oscillations for providing a pulse of a fuel-rich region at the oscillating flame front at each time when the oscillation produced pressure in the combustion chamber is in a low pressure phase. The additional heat release produced by burning such fuel-rich regions during low combustion chamber pressure effectively attenuates the combustion oscillations to a selected value.

Inventors:
 [1];  [1]
  1. Morgantown, WV
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
OSTI Identifier:
871848
Patent Number(s):
5809769
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23R - GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
combustor; oscillation; attenuation; via; control; fuel-supply; line; dynamics; combustion; systems; hydrocarbon; fuels; provided; acoustically; tuning; fuel-delivery; desired; phase; oscillations; providing; pulse; fuel-rich; region; oscillating; flame; front; time; produced; pressure; chamber; additional; heat; release; burning; regions; effectively; attenuates; selected; value; desired phase; combustion systems; additional heat; hydrocarbon fuel; combustion chamber; hydrocarbon fuels; supply line; flame front; oscillation control; chamber pressure; selected value; combustion oscillation; /60/431/

Citation Formats

Richards, George A, and Gemmen, Randall S. Combustor oscillation attenuation via the control of fuel-supply line dynamics. United States: N. p., 1998. Web.
Richards, George A, & Gemmen, Randall S. Combustor oscillation attenuation via the control of fuel-supply line dynamics. United States.
Richards, George A, and Gemmen, Randall S. Thu . "Combustor oscillation attenuation via the control of fuel-supply line dynamics". United States. https://www.osti.gov/servlets/purl/871848.
@article{osti_871848,
title = {Combustor oscillation attenuation via the control of fuel-supply line dynamics},
author = {Richards, George A and Gemmen, Randall S},
abstractNote = {Combustion oscillation control in combustion systems using hydrocarbon fuels is provided by acoustically tuning a fuel-delivery line to a desired phase of the combustion oscillations for providing a pulse of a fuel-rich region at the oscillating flame front at each time when the oscillation produced pressure in the combustion chamber is in a low pressure phase. The additional heat release produced by burning such fuel-rich regions during low combustion chamber pressure effectively attenuates the combustion oscillations to a selected value.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

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