The structure of turbulent jets, vortices and boundary layer: Laboratory and field observations

Sekula, Emil and Redondo, J. M. (2008) The structure of turbulent jets, vortices and boundary layer: Laboratory and field observations. Il nuovo cimento C, 31 (5\6). pp. 893-907. ISSN 1826-9885

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The main aim of this work is research, understand and describe key aspects of the turbulent jets and effects connected with them such as boundary layer interactions or the effect of a 2D geometry. Work is based principally on experiments but there are also some comparisons between experimental and field results. A series of experiments have been performed consisting in detailed turbulent measurements of the 3 velocity components to understand the processes of interaction that lead to mixing and mass transport between boundaries and free shear layers. The turbulent wall jet configuration occurs often in environmental and industrial processes, but here we apply the laboratory experiments as a tool to understand jet/boundary interactions in the environment. We compare the structure of SAR (Synthetic Aperture Radar) images of coastal jets and vortices and experimental jets (plumes) images searching for the relationship between these two kinds of jets at very different Reynolds numbers taking advantage of the self-similarity of the processes. In order to investigate the structure of ocean surface detected jets (SAR) and vortices near the coast, we compare wall and boundary effects on the structure of turbulent jets (3D and 2D) which are non-homogeneous, developing multifractal and spectral techniques useful for environmental monitoring in space.

Item Type: Article
Uncontrolled Keywords: Flows and jets through nozzles ; Turbulence, diffusion, and mixing processes in oceanography ; Turbulence
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 23 Mar 2020 17:18
Last Modified: 23 Mar 2020 17:18

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