Analysis of transition for a flow in a channel via reduced basis methods

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Abstract

The study of the flow mechanisms leading to transition in a planar channel flow is investigated by means of a reduced basis method known as Dynamic Mode Decomposition (DMD). The problem of identification of the most relevant DMD modes is addressed in terms of the ability to (i) provide a fairly accurate reconstruction of the flow field, and (ii) match the most relevant flow structures at the beginning of the transition region. A comparative study between a natural method of selection based on the energetic content of the modes and a new one based on the temporal dynamics of the modes is here presented.

Original languageEnglish
Article number202
Number of pages19
JournalFluids
Volume4
Issue number4
DOIs
Publication statusPublished - 5 Dec 2019

Keywords

  • channel flow
  • flow feature extraction
  • reduced basis methods
  • transition

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