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| Reference : Modelling the spray drift by a modified Gaussian tilting plume model. |
| Scientific journals : Article | |||
| Life sciences : Agriculture & agronomy | |||
| http://hdl.handle.net/2268/31378 | |||
| Modelling the spray drift by a modified Gaussian tilting plume model. | |
| English | |
| Stainier, Charles [> > > > > Unité de Mécanique et Constructions > >] | |
Robaye, Vincent  [Université de Liège > > Nutrition des animaux domestiques >] | |
| Schiffers, Bruno [Université de Liège > > Laboratoire de Phytopharmacie > >] | |
| Lebeau, Frédéric [Université de Liège > > Unité de Mécanique et Constructions > >] | |
| 2006 | |
| Aspects of Applied Biology | |
| 77 | |
| 2 | |
| 281-287 | |
| International | |
| 0265-1491 | |
| Gent | |
| Belgique | |
| [en] Drift ; Gaussian tilting plume model ; Spray nozzle ; droplet spectra | |
| [en] The increased concern about environmental effect of pesticides use has resulted
in abundant research on spray drift. Spray drift modelling has been developed to get a better understanding of the parameters involved and better estimation of the off-target spray deposit. Two groups of models have received extensive a.ttention: Random-walk and computational fluid dynamics (CFD) models have been used to predict the effect of: nozzle height, spray pressure, wind speed,... and were v.alidated with wind tunnels trials. Statistical models based on field trials results have been developed to estimate off-target spray deposit for different sprayers in various environmental conditions. A third group, Gaussian dispersion models, have received early attention in spray drift modelling but are not so popular, despite their international success in environmental pollution modelling. The adaptation of such a model to ground spraying is proposed. The nozzle droplet size distribution measured with a Malvern laser particle analyser is used to divide the nozzle output into several size classes. The spray deposit (or footprint) of each diameter class is computed. The summation of these footprints results in the global drift of the nozzle. The methodology is applied to derive the drift of a.flat fan nozzle located in a wind tunnel and the potential of this approach is discussed. | |
| Researchers ; Professionals | |
| http://hdl.handle.net/2268/31378 |
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