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ICLASS 94<br>Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems

ISBN:
978-1-56700-019-1 (Imprimer)
978-1-56700-445-5 (En ligne)

EVALUATION OF NOZZLE FOR WATER ATOMIZATION IN AGRICULTURE

J. C. F. Teixeira
Departamento de Engenharia Mecamca, Universadade do Minho, Guimaraes, Portugal

Senhorinha F. C. F. Teixeira
ALGORITMI I&D Centre, School of Engineering, University Minho, Guimarães, Portugal

Résumé

The present paper reports results on the size of droplets atomised through a standard nozzle used for pesticides spraying. The experiments were carried out using an instrument based on the laser diffraction technique. The results obtained clearly show the presence of two populations inside the spray. The evaporation of droplets along the spray was observed and proved to be of paramount importance for the smaller sizes. This occurrence was found in agreement with numerical simulations of heat and mass transfer with the droplet. The results also suggest evidence of coalescence.