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Numerical and experimental study of Boussinesq wall horizontal turbulent jet of fresh water in a static homogeneous environment of salt water

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Abstract

This paper investigates a numerical and experimental study about buoyant wall turbulent jet in a static homogeneous environment. A light fluid of fresh water is injected horizontally and tangentially to a plane wall into homogenous salt water ambient. This later is given with different values of salinity and the initial fractional density is small, so the applicability of the Boussinesq approximation is valid. Since the domain temperature is assumed to be constant, the density of the mixture is a function of the salt concentration only. Mathematical model is based on the finite volume method and reports on an application of standard k-ε turbulence model for steady flow with densimetric Froude numbers of 1–75 and Reynolds numbers of 2 000–6 000. The basic features of the model are the conservation of mass, momentum and concentration. The boundaries of jet body, the radius and cling length are determined. It is found that the jet spreading and behavior depend on the ratio between initial buoyancy flux and momentum, i.e., initial Froude number, and on the influence of wall boundary which corresponds to Coanda effect. Laboratory experiments were conducted with photographic observations of jet trajectories and numerical results are described and compared with the experiments. A good agreement with numerical and experimental results has been achieved.

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Authors and Affiliations

  1. IUSTI Laboratory, UMR 7343, Aix-Marseille Université, Technopôle de Château-Gombert, 5 rue Enrico Fermi, 13453, Marseille Cedex13, France

    Aicha Belcaid & Georges Le Palec

  2. Energy Laboratory, Research in Energy and Thermal Transfer Team, Abdelmalek Essaâdi University, Faculty of Sciences and Techniques, Tangier, Morocco

    Aicha Belcaid & Abdeslam Draoui

Authors
  1. Aicha Belcaid
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  2. Georges Le Palec
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  3. Abdeslam Draoui
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Correspondence to Aicha Belcaid.

Additional information

Biography: BELCAID Aicha (1985-), Female, Ph. D., Trainer and framer

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Belcaid, A., Le Palec, G. & Draoui, A. Numerical and experimental study of Boussinesq wall horizontal turbulent jet of fresh water in a static homogeneous environment of salt water. J Hydrodyn 27, 604–615 (2015). https://doi.org/10.1016/S1001-6058(15)60522-4

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  • DOI: https://doi.org/10.1016/S1001-6058(15)60522-4

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