performance of selected agricultural spray nozzles using particle image velocimetry
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abstract
the aim of the present study was to investigate the influence of nozzle configurations on spray drift and explain the influences using several atomization characteristics (length of spray sheet, spray angle, velocity distribution of flow field, fluctuation of velocity, and droplet size). nozzles manufactured by one company (lechler gmbh, germany) were tested by spraying local tap water in a wind tunnel at an operating pressure of 0.3 mpa and under room temperature. the nozzles tested were compact air-induction flat fan nozzles (idk120-02, idk120-03), standard flat fan nozzles (st110-02, st110-03), and hollow-cone swirl nozzles (tr80-02, tr80-03). the atomization process was recorded using a particle image velocimetry (piv) system, droplet size was measured by a sympatec helos laser-diffraction particle-size analyzer, and spray drift was evaluated in a wind tunnel with deposition measured using a calibrated fluorometer (turner-sequoia model 450). results showed that spray drift was significantly different among nozzle types (p
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Journal title:
journal of agricultural science and technologyPublisher: tarbiat modares university
ISSN 1680-7073
volume 17
issue 3 2015
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