Title: Energy and Entropy in Turbulence Decompositions
Authors: Uruba, Václav
Citation: URUBA, V. Energy and Entropy in Turbulence Decompositions. Entropy, 2019, roč. 21, č. 2, s. 1-18. ISSN 1099-4300.
Issue Date: 2019
Publisher: MDPI
Document type: článek
URI: 2-s2.0-85061962673
ISSN: 1099-4300
Keywords in different language: Energy;Entropy;Turbulence;Decompositions
Abstract in different language: The role of energy and entropy in the decomposition of turbulent velocity flow-fields is shown in this paper. Decomposition methods based on the energy concept are taken into account—proper orthogonal decomposition (POD) and its extension bi-orthogonal decomposition (BOD). The methods are well known; however, various versions are used and the interpretation of results is not straightforward. To make this clearer, the specific definition of modes is suggested and specified; moreover, energy- and entropy-motivated views on the decomposed modes are presented. This concept could offer new possibilities in the physical interpretation of modes and in reduced-order modeling (ROM) strategy efficiency evaluation.
Rights: © MDPI
© Creative Commons Attribution License 4.0
Appears in Collections:Články / Articles (CEV)

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