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Simulation of the Grain Trajectory along Working Bodies of the Pneumatic Mechanical Dehuller

The aim of this study was to determine control parameters of the pneumomechanical peeling machine for grain crops by changing the angular rotational speeds of its main working bodies, a blade disk (rotor) and a deck, to provide optimal dehulling conditions (removing films (outer shells) from the gra...

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Published in:Russian agricultural sciences 2020, Vol.46 (5), p.534-538
Main Authors: Lachuga, Yu. F., Ibyatov, R. I., Ziganshin, B. G., Shogenov, Yu. H., Dmitriev, A. V.
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container_title Russian agricultural sciences
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creator Lachuga, Yu. F.
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description The aim of this study was to determine control parameters of the pneumomechanical peeling machine for grain crops by changing the angular rotational speeds of its main working bodies, a blade disk (rotor) and a deck, to provide optimal dehulling conditions (removing films (outer shells) from the grain. Based on the model representation of the air flow, changes in the magnitude and direction of the grain velocity under the action of the air flow of the opposite direction created by the reversible deck were examined. A mathematical model of grain movement in the working space of a pneumatic mechanical dehuller is presented, which takes into account the real aerodynamics of a rotating air flow, where the dehulling efficiency is determined by the speed and direction of grain flight. The numerical implementation of this model suggests that the value of the grain velocity when hitting the deck is mainly due to the angular rotational speed of the disk and hardly depends on the angular rotational speed of the deck. The direction of the grain velocity during impact is mainly related to the angular rotational speed of the deck and the curvature of the blade at the edge of the disk. This model makes it possible to control the operation of the dehuller, change the angular rotational speeds of the disc and the deck, and affect the direction of impact of the grain against the deck and the magnitude of the impact interaction, thus making it possible to create optimal conditions for dehulling.
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subjects Aerodynamics
Agriculture
Air flow
Angular speed
Angular velocity
Biomedical and Life Sciences
Decks
Grain crops
Life Sciences
Mathematical models
Mechanization
Plant Biochemistry
Velocity
title Simulation of the Grain Trajectory along Working Bodies of the Pneumatic Mechanical Dehuller
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