A normal multimode decomposition method for stability experiments

Anatoli Tumin, Michael Amitay, Jacob Cohen, Ming De Zhou

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


A method for decomposition of an experimental signal that contains several normal modes with a prescribed frequency, is proposed The method is based on an expansion of solutions for small-amplitude spatially growing disturbances in a biorthogonal eigenfunction system. It is shown that data of one velocity component at a given cross-stream section of the flow are in some cases, sufficient for the decomposition. The method is applied successfully to analyze small-amplitude periodic disturbances in a transitional wall-jet flow.

Original languageEnglish (US)
Pages (from-to)2777-2779
Number of pages3
JournalPhysics of Fluids
Issue number10
StatePublished - Oct 1996

ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes


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