PARAMETERS EFFECTING FORCED VORTEX FORMATION IN BLADE PASSAGEWAY OF DYNAMIC AIR CLASSIFIER

Authors

  • Martin Adamčík Heat Transfer and Fluid Flow Laboratory Faculty of Mechanical Engineering Brno University of Technology Technická 2896/2, 616 00 Brno, Czech Republic
  • Tomáš Svěrák Heat Transfer and Fluid Flow Laboratory Faculty of Mechanical Engineering Brno University of Technology Technická 2896/2, 616 00 Brno, Czech Republic Institute of Materials Chemistry Faculty of Chemistry Brno University of Technology Purkynova 464/118, 612 00 Brno, Czech Republic
  • Peter Peciar Institute of Process Engineering, Faculty of Mechanical Engineering, Slovak University of Technology in Bratislava Námestie Slobody 17 81231 Bratislava Slovakia

DOI:

https://doi.org/10.14311/AP.2017.57.0304

Keywords:

rotor air classifier, forced vortex, blade passageway, particle image velocimetry (PIV), numerical simulation CFD

Abstract

Air classification of particulate materials is a method of classifying particles into coarse and fine fractions based on their size, density, or shape. Performance of the rotor air classifier is affected by operating parameters which include the classifier rotor speed, air inlet velocity and material feed rate. Effects of operating and structural parameters on turbulent flow field patterns inside of a dynamic air classifier are investigated. Increasing the computing power, together with new turbulence models and
approaches, to simulate complex fully turbulent problems by solving Navier-Stokes equations allows studying and capturing smaller flow structures and properties more accurately. Velocity vector maps for varying operating parameters are studied by means of numerical simulations. The experimental section includes a visualization of flow patterns and velocity vector maps in the rotor region by the use of the particle image velocimetry (PIV). Results are compared and discussed.

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Published

2017-10-31

How to Cite

Adamčík, M., Svěrák, T., & Peciar, P. (2017). PARAMETERS EFFECTING FORCED VORTEX FORMATION IN BLADE PASSAGEWAY OF DYNAMIC AIR CLASSIFIER. Acta Polytechnica, 57(5), 304–315. https://doi.org/10.14311/AP.2017.57.0304

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Articles