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Computation of the acoustic field in an annular gas turbine combustion chamber using a hybrid approach

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Author

Summary, in English

The acoustic field generated by flow unsteadiness in a model annular gas turbine (GT) combustion chamber is determined using a hybrid approach. In the flow solver the semi-compressible Navier-Stokes equations are resolved using LES as turbulence model. The acoustic solver is based on an inhomogeneous wave equation, where the instantaneous source terms are computed from the LES data in each time-instant. The flow and the acoustics in a GT combustor with co- and counter-rotating swirler burners have been considered. The results have shown that significant differences can be observed between the co- and counter-rotating configurations both in the flow and acoustic fields. Copyright

Department/s

Publishing year

2006

Language

English

Pages

1615-1624

Publication/Series

Proceedings of the ASME Turbo Expo

Volume

6 PART B

Document type

Conference paper

Publisher

American Society Of Mechanical Engineers (ASME)

Topic

  • Fluid Mechanics and Acoustics

Keywords

  • Time instant
  • Acoustic solvers
  • Flow unsteadiness
  • Flow solvers

Conference name

51st ASME Turbo Expo 2006

Conference date

2006-05-06 - 2006-05-11

Conference place

Barcelona, Spain

Status

Published