Preprint Article Version 1 This version is not peer-reviewed

Energy and Entropy in Turbulence Decompositions

Version 1 : Received: 28 November 2018 / Approved: 29 November 2018 / Online: 29 November 2018 (14:46:46 CET)

How to cite: Uruba, V. Energy and Entropy in Turbulence Decompositions. Preprints 2018, 2018110619 (doi: 10.20944/preprints201811.0619.v1). Uruba, V. Energy and Entropy in Turbulence Decompositions. Preprints 2018, 2018110619 (doi: 10.20944/preprints201811.0619.v1).

Abstract

The role of energy and entropy in decomposition of turbulent velocity flow-fields is to be shown in the paper. The decomposition methods based on energy concept are taken into account, namely the Proper Orthogonal Decomposition (POD) and its extension Bi-Orthogonal Decomposition (BOD). Entropy motivated view on the decomposed modes could offer new possibilities in the modes physical interpretation and in Reduced Order Modelling (ROM) strategy efficiency evaluation.

Subject Areas

turbulence ; coherent structures ; decomposition ; energy ; entropy

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