Authors: WooSeog Song Seungbae Lee DongShin Shin
Publish Date: 2011/05/22
Volume: 25, Issue: 3, Pages: 675-
Abstract
The coupling between the emitted energy and the acoustic energy in a thermal system eg combustor may result in system instability accompanying severe vibration In this study the limit curve for thermoacoustic instability is numerically obtained by using the CFDCAA combined method The response function for pulsating release of heat in the Rijke tube and the distribution of mean density in the tube are computed accurately by the CFD analysis and used as inputs to CAA predictions To verify the accuracy of the prediction method the thermoacoustics inside the horizontal one meter long Rijke tube of square crosssection which has the heating part at the location of one quarter length is simulated The predicted instability curve agrees well with the experimental one except the low flowrate region of ReDo 1Seungbae Lee received his undergraduate BS degree and graduate MS degree in Mechanical Engineering both from Seoul National University He received his PhD degree in Mechanical Engineering from University of California Loa Angeles He served as Vice Dean of Research Affairs of Inha University His research area of interest includes wind turbine design modeling and analysis aeroacoustics turbomachinery design noise control and indoor air quality Dr Lee is currently Professor of Mechanical Engineering Department Inha University and CEO of AeroNet Inc Korea
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