Hybrid method for the prediction of thermo-acoustic waves in an annular gas turbine combustion chamber

Robert-Zoltán Szász, Christophe Duwig, Laszlo Fuchs

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

The acoustic field in an annular gas turbine combustion chamber with thirty burners has been studied using a hybrid approach. The acoustic field was determined by solving an inhomogeneous wave equation. The acoustic sources were provided by a low Mach number flow solver. The main focus was to determine the influence of nonuniform behavior and interactions of neighboring burners. For this reason the acoustic sources of neighboring nozzles were imposed with a time shift. The lowest frequency eigenmodes of the combustion chamber were identified to be the first three azimuthal modes and the time shifts were introduced whereby these modes can be observed easily. The desired modes were induced at the inlet region, whereas further downstream higher wave-number modes were found to dominate the acoustic field.
Original languageEnglish
Title of host publicationAIAA paper no. 2007-5753
Publication statusPublished - 2007
Event43rd AIAA/ASMESAE/ASEE Joint Propulsion Conference and Exhibit - Cincinnati, OH, United States
Duration: 2007 Jul 82007 Jul 11

Conference

Conference43rd AIAA/ASMESAE/ASEE Joint Propulsion Conference and Exhibit
Country/TerritoryUnited States
CityCincinnati, OH
Period2007/07/082007/07/11

Subject classification (UKÄ)

  • Fluid Mechanics and Acoustics

Fingerprint

Dive into the research topics of 'Hybrid method for the prediction of thermo-acoustic waves in an annular gas turbine combustion chamber'. Together they form a unique fingerprint.

Cite this