Effect of Bed Depth on Granular Flow and Homogenization in a Vertical Bladed Mixer via Discrete Element Method

0451669 - ÚCHP 2016 RIV DE eng J - Journal Article
Barczi, T. - Trávníčková, Tereza - Havlica, Jaromír - Kohout, M.
Effect of Bed Depth on Granular Flow and Homogenization in a Vertical Bladed Mixer via Discrete Element Method.
Chemical Engineering & Technology. Roč. 38, č. 7 (2015), s. 1195-1202. ISSN 0930-7516. E-ISSN 1521-4125
R&D Projects: GA ČR(CZ) GAP105/12/0664
Institutional support: RVO:67985858
Keywords : granular mixing * DEM * flow patterns
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 2.385, year: 2015

The mixing of powders and granular materials is widely used in many fields and it has great importance for the quality of a final product. Work presented here was based on the simulations of granular mixing via DEM. Mixing was done in vertical cylindrical mixer with two opposed flat blades with 90° rake angle. The effects of packed bed depth and blade rotational speed on the process of homogenization and on the flow patterns development were analyzed. The process of homogenization was analyzed at macroscopic scale by global mixing indexes and at microscopic scale by the complex flow patterns with different nature were investigated. Macroscopic and microscopic approaches were connected here and from flow pattern observation optimal conditions for the best homogenization were predicted.
Permanent Link: http://hdl.handle.net/11104/0252778