Global to push GA events into
skip to main content

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

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.
; ; ;
Issue Date:
OSTI Identifier:
Massachusetts Institute of Technology (Cambridge, MA) NETL
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2010 Nov 08
Research Org:
Massachusetts Institute of Technology, Cambridge, MA (United States)
Sponsoring Org:
Country of Publication:
United States

Works referenced in this record:

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

A review of active control of combustion instabilities
journal, January 1993
  • McManus, K. R.; Poinsot, T.; Candel, S. M.
  • Progress in Energy and Combustion Science, Vol. 19, Issue 1, p. 1-29
  • DOI: 10.1016/0360-1285(93)90020-F

Dynamics and stability of lean-premixed swirl-stabilized combustion
journal, August 2009
  • Huang, Ying; Yang, Vigor
  • Progress in Energy and Combustion Science, Vol. 35, Issue 4, p. 293-364
  • DOI: 10.1016/j.pecs.2009.01.002

Flow structures in a lean-premixed swirl-stabilized combustor with microjet air injection
journal, January 2011
  • LaBry, Zachary A.; Shanbhogue, Santosh J.; Speth, Raymond L.
  • Proceedings of the Combustion Institute, Vol. 33, Issue 1, p. 1575-1581
  • DOI: 10.1016/j.proci.2010.06.092