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.

[thumbnail of Pascarella-etal-Fluids-2020-Analysis-of-transition-for-a-flow-in-a-channel-via-reduced-basis-methods]
Preview
 Text (Pascarella-etal-Fluids-2020-Analysis-of-transition-for-a-flow-in-a-channel-via-reduced-basis-methods)
Pascarella_etal_Fluids_2020_Analysis_of_transition_for_a_flow_in_a_channel_via_reduced_basis_methods.pdf
Final Published Version
License: Creative Commons Attribution 4.0 logo
Download (8MB)| Preview

    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;
    CORE (COnnecting REpositories)