MATHEMATICAL MODELING OF VYROASPIRATION SEPARATION OF SEED MATERIAL
DOI:
https://doi.org/10.31734/agroengineering2018.01.172Keywords:
fractionation, seed material, fraction, central tube, autoclaving motion, acceleration velocity, force forcesAbstract
In the developed system for the fractionation of sunflower seeds, self-oscillating motion is created at the expense of two groups of forces acting optically on the central separator pipe: the force-inducing forces and resistances that arise during the stretching and compression of the elastic elements. As a result of such interaction, the driving force of the separation process increases as a result of increasing the value of the centrifugal force in the event of the torsion of the central tube of the distributor; the conditions for splitting the seed flow into the fraction are improved.
The designed design is marked by the ease of execution and the minimal cost of upgrading. As theoretical studies have shown, all the main kinematic and energy characteristics of the dynamics of the particles of individual fractions give a clear split in numerical quantities, which creates a potential opportunity to improve the quality of the fractionation process and, accordingly, improve the similarity of the seeds and yield of sunflower.
According to the results of mathematical modeling, the splitting of trajectories of medium and heavy fractions was found to be within the range of 20...40%, which allowed to substantiate the design parameters of receiving bunkers for heavy and average fractions.
The results of mathematical modeling were obtained by mathematical analysis of the composite dependences for the trajectory of individual seeds particles, their velocity in the air flow, active and reactive forces operating in the system and energy indices, which were interpreted in analytical and graphical terms.
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