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Abstract

The article deals with studying the hydrodynamic characteristics of the fluidized bed in gravitation shelf dryers. The algorithm to calculate hydrodynamic characteristics of the fluidized bed in the dryer’s workspace is described. Every block of the algorithm has a primary hydrodynamic characteristics theoretical model of calculation. Principles of disperse phase motion in various areas in the gravitation shelf dryer are established. The software realization of the author’s mathematic model to calculate disperse phase motion trajectory in a free and constrained regime, disperse phase residence time in the dryers’ workspace, polydisperse systems classification is proposed in the study. Calculations of disperse phase motion hydrodynamic characteristics using the software product ANSYS CFX, based on the author’s mathematic model, are presented in the article. The software product enables automating calculation simultaneously by several optimization criteria and visualizing calculation results in the form of 3D images. The disperse phase flow velocity fields are obtained; principles of a wide fraction of the disperse phase distribution in the workspace of the shelf dryer are fixed. The way to define disperse phase residence time91 in the workspace of the shelf dryer in free (without consideration of cooperation with other particles and dryer’s elements) and con-strained motion regimes is proposed in the research. The calculation results make a base for the optimal choice of the gravitation shelf dryer working chamber sizes.
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Authors and Affiliations

Nadiia Artyukhova
1
Jan Krmela
2
ORCID: ORCID
Vladimíra Krmelová
3
Artem Artyukhov
1
ORCID: ORCID
Mária Gavendová
3

  1. Sumy State University, Oleg Balatskyi Academic and Research Institute of Finance, Economics and Management, Department of Marketing, Rymskogo-Korsakova st. 2, 40007, Sumy, Ukraine
  2. Alexander Dubček University of Trenčín, Faculty of Industrial Technologies in Púchov, Department of Numerical Methods and Computational Modeling, Ivana Krasku 491/30, 020 01 Púchov, Slovakia
  3. Alexander Dubček University of Trenčín, Faculty of Industrial Technologies in Púchov, Department of Material Technologies and Environment, Ivana Krasku 491/30, 020 01 Púchov, Slovakia

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