A5035305660- Granular flow and fluidized beds
- Particle Dynamics in Fluid Flows
- Mineral Processing and Grinding
- Cyclone Separators and Fluid Dynamics
- Fluid Dynamics Simulations and Interactions
- Fluid Dynamics and Heat Transfer
- Aerosol Filtration and Electrostatic Precipitation
- Fluid Dynamics and Turbulent Flows
- Landslides and related hazards
Johannes Kepler University of Linz
2022-2024
University of Tehran
2020-2021
Abstract Hydrodynamics of spouted fluidized beds spherical and elongated sphero‐cylindrical particles with an aspect ratio (AR) 4 were studied by the CFD‐DEM technique. The multi‐sphere method was adopted to present particles. Simulations validated experimental data for both particle types. Bubble equivalent diameter, bubble shape factor, leakage fraction obtained in simulations. Time‐averaged velocity porosity profiles, solids circulation rate, exchange distribution at spout‐annulus...
We employ a two-fluid model (TFM) as well computational fluid dynamics coupled to discrete element method (CFD-DEM) approach study the time averaged hydrodynamics of single- and multiple-spout fluidized beds. Simulations are validated against experimental data (van Buijtenen et al., Numerical on beds, Chemical Engineering Science 66 (2011) 2368–2376) with four different interphase drag correlations. The kinetic theory granular flow used for solving motion solid phase in TFM, includes...
We present a novel hybrid multi-scale model, referred to as "discrete magnification lens" method, which utilizes computational fluid dynamics coupled discrete element method (CFD-DEM) approach within specific region of interest in two-fluid model (TFM) simulation. applied the lens crossing jet problem, where TFM fails due lack considering bi-modal velocity distribution its formulation. It was observed that adopting lens, can effectively alter non-physical behavior obey seen from CFD-DEM...