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Title: Combustor oscillating pressure stabilization and method

Abstract

High dynamic pressure oscillations in hydrocarbon-fueled combustors typically occur when the transport time of the fuel to the flame front is at some fraction of the acoustic period. These oscillations are reduced to acceptably lower levels by restructuring or repositioning the flame front in the combustor to increase the transport time. A pilot flame front located upstream of the oscillating flame and pulsed at a selected frequency and duration effectively restructures and repositions the oscillating flame in the combustor to alter the oscillation-causing transport time.

Inventors:
 [1];  [1];  [1];  [2];  [1];  [3]
  1. Morgantown, WV
  2. Westover, WV
  3. Smithfield, PA
Publication Date:
Research Org.:
EG & G TECH SVCS OF WV INC
OSTI Identifier:
871766
Patent Number(s):
US 5791889
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC21-90MC26328
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
combustor; oscillating; pressure; stabilization; method; dynamic; oscillations; hydrocarbon-fueled; combustors; typically; occur; transport; time; fuel; flame; front; fraction; acoustic; period; reduced; acceptably; levels; restructuring; repositioning; increase; pilot; located; upstream; pulsed; selected; frequency; duration; effectively; restructures; repositions; alter; oscillation-causing; selected frequency; pilot flame; located upstream; pressure oscillations; flame front; oscillating pressure; dynamic pressure; /431/60/

Citation Formats

Gemmen, Randall S, Richards, George A, Yip, Mui-Tong Joseph, Robey, Edward H, Cully, Scott R, and Addis, Richard E. Combustor oscillating pressure stabilization and method. United States: N. p., 1998. Web.
Gemmen, Randall S, Richards, George A, Yip, Mui-Tong Joseph, Robey, Edward H, Cully, Scott R, & Addis, Richard E. Combustor oscillating pressure stabilization and method. United States.
Gemmen, Randall S, Richards, George A, Yip, Mui-Tong Joseph, Robey, Edward H, Cully, Scott R, and Addis, Richard E. Thu . "Combustor oscillating pressure stabilization and method". United States. https://www.osti.gov/servlets/purl/871766.
@article{osti_871766,
title = {Combustor oscillating pressure stabilization and method},
author = {Gemmen, Randall S and Richards, George A and Yip, Mui-Tong Joseph and Robey, Edward H and Cully, Scott R and Addis, Richard E},
abstractNote = {High dynamic pressure oscillations in hydrocarbon-fueled combustors typically occur when the transport time of the fuel to the flame front is at some fraction of the acoustic period. These oscillations are reduced to acceptably lower levels by restructuring or repositioning the flame front in the combustor to increase the transport time. A pilot flame front located upstream of the oscillating flame and pulsed at a selected frequency and duration effectively restructures and repositions the oscillating flame in the combustor to alter the oscillation-causing transport time.},
doi = {},
url = {https://www.osti.gov/biblio/871766}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

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Works referenced in this record:

Active control of reheat buzz
journal, July 1988


Active control for gas turbine combustors
journal, January 1991


Practical active control system for combustion oscillations
journal, May 1990


Combustion instabilities coupled by pressure waves and their active control
journal, January 1992


Active control of unsteady combustion-induced oscillations
journal, September 1992


Closed-loop amplitude modulation control of reacting premixed turbulent jet
journal, December 1991


A review of active control of combustion instabilities
journal, January 1993