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Title: Swirl-counter-swirl microjets for thermoacoustic instability suppression

Abstract

Combustor. The combustor includes an axially symmetric tube along with means for introducing fuel and air into the tube. A swirler is disposed within the tube to impart rotation in a first direction to the air/fuel mixture. A plurality of holes downstream of the swirler are disposed around the tube and offset at an angle relative to an inward normal to the tube wall. Air is injected through the offset holes to impart rotation to the air/fuel mixture in a second direction opposite to the first direction. A combustion chamber having a diameter larger than that of the tube receives and burns the air/fuel mixture from the tube.

Inventors:
; ; ;
Issue Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1130303
Patent Number(s):
8708696
Application Number:
12/941,177
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23R - GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23D - BURNERS
DOE Contract Number:  
FC26-02NT41431
Resource Type:
Patent
Resource Relation:
Patent File Date: 2010 Nov 08
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Ghoniem, Ahmed F, LaBry, Zachary A, Shanbhogue, Santosh J, and Speth, Raymond L. Swirl-counter-swirl microjets for thermoacoustic instability suppression. United States: N. p., 2014. Web.
Ghoniem, Ahmed F, LaBry, Zachary A, Shanbhogue, Santosh J, & Speth, Raymond L. Swirl-counter-swirl microjets for thermoacoustic instability suppression. United States.
Ghoniem, Ahmed F, LaBry, Zachary A, Shanbhogue, Santosh J, and Speth, Raymond L. Tue . "Swirl-counter-swirl microjets for thermoacoustic instability suppression". United States. https://www.osti.gov/servlets/purl/1130303.
@article{osti_1130303,
title = {Swirl-counter-swirl microjets for thermoacoustic instability suppression},
author = {Ghoniem, Ahmed F and LaBry, Zachary A and Shanbhogue, Santosh J and Speth, Raymond L},
abstractNote = {Combustor. The combustor includes an axially symmetric tube along with means for introducing fuel and air into the tube. A swirler is disposed within the tube to impart rotation in a first direction to the air/fuel mixture. A plurality of holes downstream of the swirler are disposed around the tube and offset at an angle relative to an inward normal to the tube wall. Air is injected through the offset holes to impart rotation to the air/fuel mixture in a second direction opposite to the first direction. A combustion chamber having a diameter larger than that of the tube receives and burns the air/fuel mixture from the tube.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {4}
}

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Works referenced in this record:

Combustion dynamics and control: Progress and challenges
journal, January 2002


Active control of supersonic impingement tones using steady and pulsed microjets
journal, October 2006


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


Impact on Microjet Actuation on Stability of a Backward-Facing Step Combustor
conference, June 2012


On the use of microjets to suppress turbulence in a Mach 0.9 axisymmetric jet
journal, September 2003


Suppression of combustion instabilities by active control
journal, January 1989


Dynamics and stability of lean-premixed swirl-stabilized combustion
journal, August 2009


Instability Suppression in a Swirl-Stabilized Combustor Using Microjet Air Injection
conference, June 2012

  • LaBry, Zachary; Shanbhogue, Santosh; Speth, Raymond
  • 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
  • https://doi.org/10.2514/6.2010-1524

Control of High-Temperature Supersonic Impinging Jets Using Microjets
journal, December 2009


Supersonic Cavity Flows and Their Control
journal, September 2006


Flow structures in a lean-premixed swirl-stabilized combustor with microjet air injection
journal, January 2011