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

Pascarella, Gaetano and Kokkinakis, Ioannis and Fossati, Marco (2019) Analysis of transition for a flow in a channel via reduced basis methods. Fluids, 4 (4). 202. (https://doi.org/10.3390/fluids4040202)

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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.

ORCID iDs

Pascarella, Gaetano, Kokkinakis, Ioannis ORCID logoORCID: https://orcid.org/0000-0001-9694-3764 and Fossati, Marco ORCID logoORCID: https://orcid.org/0000-0002-1165-5825;
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