THE USE OF DIMENSIONAL ANALYSIS IN STUDYING THE SPRAYING PROCESS THROUGH NOZZLES AT PHYTOSANITARY TREATMENT MACHINES. (English)

PREZENTAREA METODEI ANALIZEI DIMENSIONALE ÎN STUDIUL PROCESULUI DE PULVERIZARE PRIN DUZE LA MAŞINILE DE APLICAT TRATAMENTE FITOSANITARE. (Romanian)

The quality of phytosanitary treatments performed in crops is largely determined by how substances are sprayed on the plant, by the droplets size, the coverage of the plant and the reduction of drift phenomenon. The main elements responsible for the quality of working process of phytosanitary treatment machines are the nozzles, which are the principal elements of any sprayers. This explains the great variety of spraying systems. In this paper are detailed some theoretical issues regarding the spraying process through nozzles as the basis for experiments to be carried out using the machine for high precision application of phytosanitary treatments in orchards, MSL. Analysis and modeling of this process is achieved using as main working instrument the dimensional analysis theory. [ABSTRACT FROM AUTHOR]

Calitatea tratamentelor fitosanitare efectuate în culturile agricole este determinată în mare măsură de modul cum sunt pulverizate substanţele fitosanitare pe plantă, mărimea picăturilor, gradul de acoperire a plantei şi reducerea fenomenului de derivă. Principalele elemente responsabile de calitatea procesului de lucru al maşinilor de aplicat tratamente fitosanitare sunt duzele, care se constituie ca elemente principale ale oricărei maşini de stropit. Acest fapt explică şi marea diversitate de sisteme de pulverizare. În această lucrare sunt aprofundate unele aspecte teoretice privind procesul de pulverizare prin duze, ca bază pentru experimentările ce vor fi efectuate folosind Maşina pentru aplicarea cu precizie ridicată a tratamentelor fitosanitare în plantaţiile pomicole, MSL. Analiza şi modelarea acestui proces se fac utilizând ca instrument principal de lucru teoria analizei dimensionale. [ABSTRACT FROM AUTHOR]

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