The air speed in the fan and the flow in an agricultural sprayer

Main Article Content

Mario Ignacio Herrera Prat

Abstract

The magnitude of air velocity at the fan outlet of agricultural sprayers influences the aerodynamic airflow and is a key factor in the flow structure. The effect of varying the fan output speed in aerodynamic airflow during work at different speeds of movement of the sprayer, using computer simulation (CFD) is analyzed in this work. Simulations of output speeds were conducted in the diffuser fan of 40, 45 and 50 m/s with a fan output width of 115 mm and considering the sprayer without motion and working speeds of 2.18, 4.5 and 6.35 km / h. The aerodynamic behavior of the airflow for each variant was analyzed. The increase in the fan output speed produces an accelerated wear on the core of the current; therefore the use of lower speeds enhances aerodynamic flow.

Article Details

How to Cite
Herrera Prat, M. I. (2017). The air speed in the fan and the flow in an agricultural sprayer. Revista Ciencias Técnicas Agropecuarias, 26(1), 50–56. Retrieved from https://revistas.unah.edu.cu/index.php/rcta/article/view/478
Section
Original Articles
Author Biography

Mario Ignacio Herrera Prat, Ministerio de Educación Superior(MES)

Dr.C., Inv. y Prof. Tit.

References

ABRAMOVICH, G.N.: The theory of turbulent jets, Ed. M.I.T. Press, Cambridge, Mass., 671 p., 1963.

BRAZEE, R.D.; DI PRINZIO, A.; BEHMER, S.; GIULIETTI, L.; MAGDALENA, J.C.: “Pérdidas provocadas por pulverizadores hidroneumáticos

en fruticultura”, [en línea], En: Balbuena, R.H.; Benez, S.H. y Jorajuría, C.D. (eds.), Ingeniería rural y mecanización agraria en

el ámbito latinoamericano, Ed. Universidad Nacional de La Plata, La Plata, Argentina, p. 115, 1998, Disponible en: http://catalogosuba.

sisbi.uba.ar/vufind/Record/201603040115332832, [Consulta: 26 de noviembre de 2016].

CROSS, J.; WALKLATE, P.J.; MURRAY, R.A.; RICHARDSON, G.M.: “Spray deposits and losses in different sized apple trees from an

axial fan orchard sprayer: 1. Effects of spray liquid flow rate”, Crop Protection, 20(1): 13-30, 2001, ISSN: 0261-2194, DOI: 10.1016/S0261-

(00)00046-6.

DELELE, M.A.; DE MOOR, A.; SONCK, B.; RAMON, H.; NICOLAÏ, B.M.; VERBOVEN, P.: “Modelling and Validation of the Air Flow

generated by a Cross Flow Air Sprayer as affected by Travel Speed and Fan Speed”, Biosystems Engineering, 92(2): 165-174, 2005, ISSN:

-5110, DOI: 10.1016/j.biosystemseng.2005.05.018.

ENDALEW, A.M.; DEBAER, C.; RUTTEN, N.; VERCAMMEN, J.; DELELE, M.A.; RAMON, H.; NICOLAÏ, B.M.; VERBOVEN, P.: “A new

integrated CFD modelling approach towards air-assisted orchard spraying. Part I. Model development and effect of wind speed and direction

on sprayer airflow”, Computers and Electronics in Agriculture, 71(2): 128-136, 2010, ISSN: 0168-1699, DOI: 10.1016/j.compag.2009.11.005.

FOQUÉ, D.; PIETERS, J.G.; NUYTTENS, D.: “Spray deposition and distribution in a bay laurel crop as affected by nozzle type, air assistance

and spray direction when using vertical spray booms”, Crop Protection, 41: 77-87, 2012, ISSN: 0261-2194, DOI: 10.1016/j.cropro.2012.05.020.

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:

1016/j.ijmst.2013.12.022.

HERRERA, P.M.I.; DE LA FIGAL GARCÍA, C.A.E.; DE LAS CUEVAS, M.H.; TEIXEIRA, M.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,

(2): 5-10, 2014, ISSN: 2071-0054.

HERRERA, P.M.I.; DE LAS CUEVAS, M.H.; MENESES, R.V.; RODRIGUES, G.J.: “Efecto de los parámetros del ventilador de las asperjadoras

en la calidad del trabajo”, Revista Ciencias Técnicas Agropecuarias, 13(4): 21-25, 2004, ISSN: 1010-2760.

HERRERA, P.M.I.; TEIXEIRA, M.M.; RODRIGUES, G.J.; DE LAS CUEVAS, M.H.: “Modelación mediante la dinámica de flujo computacional

de la corriente de aire de un pulverizador”, Revista Ciencias Técnicas Agropecuarias, 15(1): 12–18, 2006, ISSN: 2071-0054.

RANDALL, J.M.: “The relationships between air volume and pressure on spray distribution in fruit trees”, Journal of Agricultural Engineering

Research, 16(1): 1-31, 1971, ISSN: 0021-8634, DOI: 10.1016/S0021-8634(71)80002-1.

SCHLICHTING, H.: Teoría de la capa límite, Ed. Urmo, Bilbao, 774 p., 1972.

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): 1887-1897, 2004, ISSN: 2151-0059, DOI: 10.13031/2013.17797.

WALKLATE, P.J.: “A simulation study of pesticide drift from an air-assisted orchard sprayer”, Journal of Agricultural Engineering Research,

: 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,

, ISSN: 0021-8634, DOI: 10.1006/jaer.1996.0039.

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