Atomization and Sprays Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

For Online Access

Best Paper Award Selection - Editorial Board Site

2008, Volume18

Issue 4

86 pages

DOI: 10.1615/AtomizSpr.v18.i4

Issue price - $118.00

N. Kadem
Centre de Recherche pour l'Ingenierie de l'Agriculture et de l'Environnement, 3275, Route Cezanne, CS 40061, Le Tholonet 13182 Aix-en-Provence Cedex 5, France

A. Tchiftchibachian
Centre de Recherche pour l'Ingenierie de l'Agriculture et de l'Environnement, 3275, Route Cezanne, CS 40061, Le Tholonet 13182 Aix-en-Provence Cedex 5, France

R. Borghi
EGIM, IMT - Technopôle de Château-Gombert, 38, rue Joliot Curie 13451 Marseille Cedex 20, France

The hose reel gun irrigation system is the most popular in Europe. To improve its performance, a good knowledge of the size and spatial distributions of the generated droplets is necessary. The objective of this paper is to investigate the water jet issuing from an irrigation nozzle. In order to model the atomization process close to the nozzle, we used an Eulerian approach of a single turbulent flow representing the liquid-gas mixture. As for a single-phase flow, a mean approach combined with the k−ε turbulence model is used and only one system of transport equations for the mixture is solved. The model considers two transport equations, namely, the mean liquid mass fraction equation that controls the liquid dispersion and the mean liquid-gas interface density equation that allows the calculation of the drops size. This equation includes production and destruction terms that represent physical phenomena contributing to the interface stretching and collapse. Optical probes were used to have an experimental description of the phase distribution in the two-phase flow and a database to validate numerical calculations.

DOI: 10.1615/AtomizSpr.v18.i4.20 Download article, 315-341 pages

Article price - $35.00

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