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Noise Generated by a Lifted Flame in a Vitiated Co-Flow

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Author

Summary, in English

The acoustic field generated by a lifted flame is studied by a hybrid approach. First, Large Eddy Simulations (LES) are used to compute the flow and the acoustic sources. Next, an inhomogeneous wave equation is solved to obtain the resulting acoustic field. The flow computations show good agreement with experimental data. The dominant acoustic sources are found to be located in the ignition region and at the tip of the flame. The acoustic computations revealed the presence of low-frequency waves radiated in the far-field. The shape of the most energetic acoustic modes are identified by POD analysis to be axial modes.

Department/s

Publishing year

2008

Language

English

Pages

867-876

Publication/Series

Proceedings of the Asme Turbo Expo 2008, vol 3, PTS A and B

Document type

Conference paper

Publisher

American Society Of Mechanical Engineers (ASME)

Topic

  • Fluid Mechanics and Acoustics

Conference name

53rd ASME Turbo Expo 2008

Conference date

2008-06-09 - 2008-06-13

Status

Published

ISBN/ISSN/Other

  • ISBN: 978-0-7918-4313-0