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Flame response to excitation at frequencies <60 Hz as measured by phase-resolved NO PLIF

Ratner, Albert and Palm, Steven L. and Pun, Winston and Ramirez, Brenda and Culick, F. E. C. (2002) Flame response to excitation at frequencies <60 Hz as measured by phase-resolved NO PLIF. AIAA Papers, AIAA-2002-0195. American Institute of Aeronautics and Astronautics . http://resolver.caltech.edu/CaltechAUTHORS:20101117-112555177

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Abstract

The California Institute of Technology's Combustion Acoustics Facility is used to measure the changes in the creation of NO in a partially premixed jet flame due to acoustic forcing at frequencies ranging from 22 to 55 Hz. The facility generates a quarter-wave mode so that the test flame is in a region where the acoustic velocity is nearly zero. This facility and a similar burner have been previously used to measure the phase-resolved response of the OH field. In this experiment, phase-resolved NO planar laserinduced fluorescence (PLIF) measurements are recorded. The location and phase coupling of the NO field are analyzed, and the production and transport of NO are compared with previously reported OH field measurements. The NO levels increase for frequencies that exhibit stronger acoustic coupling to the flame. The NO concentration field variations lead (in phase space) the OH field variations. This is probably a result of the greater NO sensitivity to temperature (which itself is closely coupled to the chamber pressure).


Item Type:Report or Paper (Technical Report)
Additional Information:© 2002 by California Institute of Technology. The authors thank the L. A. County Sanitation District, the DOE Advanced Gas Turbine Systems Research program, the Air Force Office of Scientific Research, and the California Institute of Technology for their support of this work.
Group:Guggenheim Jet Propulsion Center
Funders:
Funding AgencyGrant Number
L.A. County SanitationUNSPECIFIED
Department of Energy Advanced Gas Turbine Systems Research ProgramUNSPECIFIED
Air Force Office of Scientific ResearchUNSPECIFIED
California Institute of TechnologyUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion CenterUNSPECIFIED
AIAA2002-0195
Record Number:CaltechAUTHORS:20101117-112555177
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20101117-112555177
Official Citation:Flame response to excitation at frequencies <60 Hz as measured by phase-resolved NO PLIF Ratner, A., California Inst. of Technology, Pasadena; Palm, S. L., ; Pan, W., ; Ramirez, B., ; Culick, F. E. C., AIAA-2002-195 AIAA Aerospace Sciences Meeting and Exhibit, 40th, Reno, NV, Jan. 14-17, 2002
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:20860
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:18 Nov 2010 21:38
Last Modified:26 Dec 2012 12:39

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