Modelling of the air current in the vertical plane of Hatsuta agricultural sprayer

Mario Ignacio Herrera-Prat, Armando Eloy García de la Figal-Costales, Héctor de las Cuevas-Milán, Mauri Martins-TeixeiraIII

Abstract

The proper use of the air stream in agricultural sprays is a constant concern of the farmer and the professionals of the Agricultural Engineering. The drift produced by this equipment affects human health and the environment by pollution, in addition to the economic damages they represent to the farmer. In the work, the airflow in the vertical plane of the Hatsuta-420, spray studied using the modelling by means of the computerized fluid design technique. In the modelling, the FLUENT fluid package of ANSYS 16.0 software used. The results of the modeling are analyzed and compared with experimental measurements of the air velocity made to this sprayer in the plane under study. It is concluded that with the modeling of air flow in CFD, the airflow studies in the vertical plane of agricultural sprayers with the 0.97 to 0.99 accuracy can be predicted.

Keywords

flow; fluid dynamics; sprayers

References

ABRAMOVICH, G.N.; GIRSHOVICH, T.A.; KRASHENINNIKOV, S.I.; SEKUNDOV, A.N.; SMIRNOVA, I.P.: “The theory of turbulent jets”, Moscow Izdatel Nauka, 1984.

BARTZANAS, T.; KACIRA, M.; ZHU, H.; KARMAKAR, S.; TAMIMI, E.; KATSOULAS, N.; LEE, I.B.; KITTAS, C.: “Computational fluid dynamics applications to improve crop production systems”, Computers and Electronics in Agriculture, 93: 151–167, 2013.

CROSS, J.V.; WALKLATE, P.J.; MURRAY, R.A.; RICHARDSON, G.M.: “Spray deposits and losses in different sized apple trees from an axial fan orchard sprayer: 3. Effects of air volumetric flow rate”, Crop protection, 22(2): 381–394, 2003, ISSN: 0261-2194.

DELELE, M.A.; JAEKEN, P.; DEBAER, C.; BAETENS, K.; ENDALEW, A.M.; RAMON, H.; NICOLAÏ, B.M.; VERBOVEN, P.: “CFD prototyping of an air-assisted orchard sprayer aimed at drift reduction”, Computers and Electronics in Agriculture, 55(1): 16–27, 2007, ISSN: 0168-1699, DOI: 10.1016/j.compag.2006.11.002.

DUGA, A.T.; DELELE, M.A.; RUYSEN, K.; DEKEYSER, D.; NUYTTENS, D.; BYLEMANS, D.; NICOLAI, B.M.; VERBOVEN, P.: “Development and validation of a 3D CFD model of drift and its application to air-assisted orchard sprayers”, Biosystems Engineering, 154: 62–75, 2017, ISSN: 1537-5110, DOI: 10.1016/j.biosystemseng.2016.10.010.

FUJIMOTO, A.; SATOW, T.; KISHIMOTO, T.: “Simulation of spray distribution with boom sprayer considering effect of wind for agricultural cloud computing analysis”, Engineering in Agriculture, Environment and Food, 9(4): 305–310, 2016.

HAN, F.; WANG, D.; JIANG, J.; ZHU, X.: “Modeling the influence of forced ventilation on the dispersion of droplets ejected from roadheader-mounted external sprayer”, International Journal of Mining Science and Technology, 24(1): 129–135, 2014, ISSN: 2095-2686, DOI: 10.1016/j. ijmst.2013.12.022.

HERRERA, P.M.I.; GARCÍA DE LA FIGAL COSTALES, A.E.; DE LAS CUEVAS MILÁN, H.; MARTINS TEIXEIRA, M.: “Evaluación mediante la Dinámica de los Fluidos por Computadora (CFD) de la corriente de aire del pulverizador agrícola ASS-800”, Revista Ciencias Técnicas Agropecuarias, 23(2): 5–10, 2014, ISSN: 2071-0054.

HERRERA, P.M.I.; MARTINS TEIXEIRA, M.; RODRIGUES, G.J.; DE LAS CUEVAS MILÁN, H.R.: “Aerodinámica del ventilador axial del pulverizador Hatsuta-420 empleado en frutales”, Revista Ciencias Técnicas Agropecuarias, 14(3), 2005, ISSN: 2071-0054.

RODRIGUES, G.J.: Critérios rastreáveis na aplicação de inseticida no controle do bicho mineiro do cafeeiro. 2005. 108 f, Tese (Doutorado em Mecanização Agrícola)–Universidade Federal de Viçosa, Viçosa, 2005.[Links], PhD Thesis, 2005.

SALCEDO, R.; GRANELL, R.; PALAU, G.; VALLET, A.; GARCERÁ, C.; CHUECA, P.; MOLTÓ, E.: “Design and validation of a 2D CFD model of the airflow produced by an airblast sprayer during pesticide treatments of citrus”, Computers and Electronics in Agriculture, 116: 150–161, 2015, ISSN: 0168-1699, DOI: 10.1016/j.compag.2015.06.005.

TSAY, J.-R.; LIANG, L.-S.; LU, L.-H.: “Evaluation of an air-assisted boom spraying system under a no-canopy condition using CFD simulation”, Transactions of the ASAE, 47(6): 1887, 2004.

WALKLATE, P.J.: “A simulation study of pesticide drift from an air-assisted orchard sprayer”, Journal of Agricultural Engineering Research, 51: 263–283, 1992, ISSN: 0021-8634, DOI: 10.1016/0021-8634 (92)80042-Q.

WALKLATE, P.J.; WEINER, K.-L.; PARKIN, C.S.: “Analysis of and experimental measurements made on a moving air-assisted sprayer with two-dimensional air-jets penetrating a uniform crop canopy”, Journal of Agricultural Engineering Research, 63(4): 365–377, 1996, ISSN: 0021-8634

Refbacks

  • There are currently no refbacks.