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Water 2017, 9(11), 893; https://doi.org/10.3390/w9110893

Invariants of Turbulence Reynolds Stress and of Dissipation Tensors in Regular Breaking Waves

1
Dipartimento di Ingegneria e Architettura (DIA), Università di Parma, Parco Area delle Scienze, 181/A, 43124 Parma, Italy
2
Instituto Interuniversitario de Investigación del Sistema Tierra (IISTA), Universidad de Granada, Avda. del Mediterráneo s/n, 18006 Granada, Spain
*
Author to whom correspondence should be addressed.
Received: 30 September 2017 / Revised: 30 October 2017 / Accepted: 10 November 2017 / Published: 16 November 2017
(This article belongs to the Special Issue Turbulence in River and Maritime Hydraulics)
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Abstract

A series of measurements in a flume with a particle-tracking system in three dimensions applied to breaking waves is used to analyse the structure of turbulence with a full set of variables that usually are available only in numerical simulations. After extracting turbulence, in addition to the standard analysis aiming to quantify the fluxes, i.e., the time-average and the phase-average levels of turbulence and vorticity (details are given in two former papers), a more in-depth description of the structure of turbulence Reynolds stress tensor is given, focussing on the invariants evolution in time and in the vertical. A relation between the components of the Reynolds stress tensor and of the dissipation tensor is depicted. This relation is finalised to possible models of turbulence in breaking waves. View Full-Text
Keywords: breaking waves; turbulence invariants; laboratory experiments breaking waves; turbulence invariants; laboratory experiments
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Longo, S.; Clavero, M.; Chiapponi, L.; Losada, M.A. Invariants of Turbulence Reynolds Stress and of Dissipation Tensors in Regular Breaking Waves. Water 2017, 9, 893.

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