Experimental and computational visualization of the flow field in a thermoacoustic stack

Philippe Blanc-Benon*, Etienne Besnoin, Omar Knio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

83 Scopus citations


The oscillating flow field in a thermoacoustic stack is visualized experimentally using PIV measurements, and computationally using results of low-Mach-number simulations. The experiments and computations are performed under similar conditions. Results are obtained for two distinct configurations, involving thin and thick stack plates. In the first case, the flow field around the edge of the stack exhibits elongated vorticity layers, while in the latter it is dominated by the shedding and impingement of concentrated vortices. A close agreement between experimental and computational results is found, thus providing strong support for both approaches and further predictions.

Original languageEnglish (US)
Pages (from-to)17-24
Number of pages8
JournalComptes Rendus - Mecanique
Issue number1
StatePublished - Jan 1 2003
Externally publishedYes

Bibliographical note

Funding Information:
The work of EB and OK was supported by the Office of Naval Research. The visit of PhBB to The Johns Hopkins University was supported by ONRIFO. Computations were performed at the National Center for Supercomputing Applications. Experiments was supported by Délégation Générale à l’Armement under contract number DSP N◦ 97-2532. PhBB also thanks M. Michard, Ch. Nicot and N. Grosjean for their contributions.


  • Heat transfer
  • Oscillatory flow
  • PIV
  • Simulation
  • Thermoacoustics

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials


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