Перегляд за Автор "Korniyenko, Bogdan"

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  • Ескіз
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    Modeling of heat exchangement in fluidized bed with mechanical liquid distribution
    (Asian Research Publishing Network, 2019-06) Kornienko, Yaroslav; Liubeka, Andrii; Sachok, Roman; Korniyenko, Bogdan
    The uniform distribution of mineral and humic substances throughout the volume of granules in the preparation of organo-mineral fertilizers occurs in the layer-shaped mechanism of granulation. To achieve this goal, the introduction of a multicomponent heterogeneous liquid phase into a fluidized bed medium using a mechanical dispersant. The introduction of a liquid phase in the middle of a fluidized bed with the use of a mechanical disperser of conical type with a perforated surface can significantly increase the volume of the irrigation zone with the simultaneous movement of moist granules from the bowl of the dispersant outside, which eliminates the risk of formation of agglomerates and intensifies the renewal of the contact surface phases in the irrigation zone. The proposed mathematical model adequately describes the process of granulation with the use of a mechanical disperser located inside a layer of a granular material in the application of a pulsating mode of fluidization, which significantly intensifies the diffusion-controlled process in the presence of phase transitions.
  • Ескіз
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    Parametric identification of the process of contact membrane distillation
    (Asian Research Publishing Network (ARPN), 2019) Zhulynskyi, Aleksandr; Ladieva, Lesya; Korniyenko, Bogdan
    The mathematical model of the contact membrane distillation process has such an unknown parameter as the membrane permeability coefficient. The coefficient of permeability of the membrane takes into account not only the transfer of heat with the vapor through the pores of the membrane, but also through the polymer structure. In order to determine the coefficient of permeability, which is represented by variables along the length of the channel and in time, methods of the theory of optimal control were applied. An algorithm for identifying variable length and time permeability coefficient is developed. The application of the initial approximation ensures the convergence of the algorithm in the fourth iteration of the gradient procedure. The refined mathematical model of the contact membrane distillation process can be used in control tasks.