Machinery & Energetics

The article determines the relevance of the existing mathematical model of a typical object agricultural purpose with biological content ("breathing products", plants, animals) whose technological parameters vary both in time and coordinates. The definite system of differential equations in partial derivatives, with certain assumptions, accurately describes the processes of heat exchange of the airflow with the elements of the object. In the example of the process of cooling the plant product in the mound by active ventilation with air with less than the temperature product, approximate analytic solutions of the system of equations in partial derivatives are given that determine the dynamics of the object with variables in the height of the mound by parameters. It is shown that when applying the step-by-step method for calculating continuous processes on the basis of the mathematical description of the process in the elementary layer it is possible to accurately describe the actual process of cooling the disperse product using the cell's principle of constructing a dynamic model. The simulation process model is developed in MATLAB / Simulink in the form of functional blocks.

mathematical model, transfer function, simulation model