Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed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.

Keywords

turbulence ; coherent structures ; decomposition ; energy ; entropy

Subject

ENGINEERING, Mechanical Engineering

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