DocumentCode
526971
Title
Notice of Retraction
Frequency hopping of thermo-acoustic instability in Rijke-type combustors using joint-time-frequency analysis
Author
Guoneng Li ; Jiang Lin ; Li Kai
Author_Institution
Coll. of Light Ind., Zhejiang Univ. of Sci. & Technol., Hangzhou, China
Volume
2
fYear
2010
fDate
17-18 July 2010
Firstpage
88
Lastpage
91
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
In order to study the mechanism of flame extinguishment caused by thermo-acoustic instability inside the Rijke-type combustors, two Rijke-type combustors have been explored, and experimental data on acoustic waves, pressure amplitude, resonant frequency as well as temperature were measured and analyzed. Joint time frequency analysis (JTFA) method was employed to analyze the characteristics of the resonant frequency when the flame is about to be extinguished. Results revealed that the eigen-frequency of start-oscillation process is several times larger than that just before the flame extinguishment, and that the resonant frequency jump to a lower value (a lower eigen-frequency mode) when flame extinguishment in Rijke-type combustors happened. On the other hand, a bulk mode of thermo-acoustic oscillations with resonant frequency less than 10 Hz occurs when the flame is about to be extinguished.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
In order to study the mechanism of flame extinguishment caused by thermo-acoustic instability inside the Rijke-type combustors, two Rijke-type combustors have been explored, and experimental data on acoustic waves, pressure amplitude, resonant frequency as well as temperature were measured and analyzed. Joint time frequency analysis (JTFA) method was employed to analyze the characteristics of the resonant frequency when the flame is about to be extinguished. Results revealed that the eigen-frequency of start-oscillation process is several times larger than that just before the flame extinguishment, and that the resonant frequency jump to a lower value (a lower eigen-frequency mode) when flame extinguishment in Rijke-type combustors happened. On the other hand, a bulk mode of thermo-acoustic oscillations with resonant frequency less than 10 Hz occurs when the flame is about to be extinguished.
Keywords
acoustic waves; combustion; combustion equipment; flames; temperature measurement; time-frequency analysis; Rijke-type combustors; acoustic waves; eigen-frequency; flame extinguishment; frequency hopping; joint-time-frequency analysis; pressure amplitude; resonant frequency; start-oscillation process; temperature measurement; thermo-acoustic instability; thermo-acoustic oscillation; Acoustics; Combustion; Electron tubes; Fires; Oscillators; Resonant frequency; Temperature measurement; frequency hopping; joint time frequency analysis; noise pollution; thermo-acoustic instability;
fLanguage
English
Publisher
ieee
Conference_Titel
Environmental Science and Information Application Technology (ESIAT), 2010 International Conference on
Conference_Location
Wuhan
Print_ISBN
978-1-4244-7387-8
Type
conf
DOI
10.1109/ESIAT.2010.5567281
Filename
5567281
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