skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Patent ·
OSTI ID:1130303
; ; ;

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.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-02NT41431
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
Patent Number(s):
8,708,696
Application Number:
12/941,177
OSTI ID:
1130303
Resource Relation:
Patent File Date: 2010 Nov 08
Country of Publication:
United States
Language:
English

References (22)

Dual-fuel pre-mixing burner assembly patent September 1994
Method and apparatus for reducing noise generated by combustion patent February 1996
Detachable torch for wet oxidation patent March 1998
Process and device for suppression of flame and pressure pulsations in a furnace patent June 1998
Microjet based control system patent January 2005
Compliant metal support for ceramic combustor liner in a gas turbine engine patent-application November 2006
Device for Injecting a Mixture of Air and Fuel,and Combustion Chamber and Turbomachine Provided with Such a Device patent-application January 2008
Method and Device for the Combustion of Hydrogen in a Premix Burner patent-application April 2008
Heat reactor patent-application May 2008
Apparatus and Method for a Gas Turbine Entrainment System patent-application July 2009
Passive Noise Attenuation System patent-application March 2010
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
  • 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
conference June 2012
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

Similar Records

Related Subjects

42 ENGINEERING