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A MATHEMATICAL MODEL FOR THE SEEDS LOSSES PREDICTION ON THE CLEANING SYSTEM SIEVES OF THE HARVESTING COMBINES


CĂSĂNDROIU TUDOR, VOICU GHEORGHE, MAICAN EDMOND
"POLITEHNICA" UNIVERSITY OF BUCHAREST, FACULTY OF BIOTECHNICAL SYSTEMS ENGINEERING

Issue:

MOCM, Number 14, Volume II

Section:

Issue No. 14 - Volume II (2008)

Abstract:

This paper presents a mathematical model which, for the first time, squares up to the dimensional analysis theory on the study of the seeds separation process on the sieves from the cereal harvesters' cleaning systems, in order to forecast the system's seeds loses. Seven main parameters of the process were considered and there were determined the dimensionless considerations of similitude, being proposed an explicit relation between them, as a powers product of type: k a b c1 2 3 4 Π = ⋅Π ⋅Π ⋅Π (Π1, Π2, Π3, Π4 considerations of similitude, and k, a, b, c - coefficients). The proposed equation was tested with experimental data, being achieved an acceptable value for the correlation coefficient R2 = 0.865. The equation allows the seeds losses estimation from the cleaning system, and is useful both to the designers and operators of the combine harvesters.

Keywords:

cereal harvesters, cleaning system, seeds losses, dimensional analysis, mathematical model.

Code [ID]:

MOCM200814V02S01A0003 [0001997]


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