A5071048612- Granular flow and fluidized beds
- Particle Dynamics in Fluid Flows
- Fluid Dynamics and Heat Transfer
- Fluid Dynamics and Mixing
- Lattice Boltzmann Simulation Studies
- Cyclone Separators and Fluid Dynamics
- Mineral Processing and Grinding
- Heat and Mass Transfer in Porous Media
- Catalysts for Methane Reforming
- Catalytic Processes in Materials Science
- Fluid Dynamics Simulations and Interactions
- Minerals Flotation and Separation Techniques
- Catalysis and Oxidation Reactions
- Innovative Microfluidic and Catalytic Techniques Innovation
- Fluid Dynamics and Turbulent Flows
- Iron and Steelmaking Processes
- Thermochemical Biomass Conversion Processes
- Enhanced Oil Recovery Techniques
- Aerosol Filtration and Electrostatic Precipitation
- Carbon Dioxide Capture Technologies
- Landslides and related hazards
- Catalysis and Hydrodesulfurization Studies
- Metallurgical Processes and Thermodynamics
- Material Dynamics and Properties
- Surface Modification and Superhydrophobicity
Eindhoven University of Technology
2016-2025
NXP (Netherlands)
2022
Dutch Polymer Institute
2007-2018
Delft University of Technology
2017
University of Twente
2002-2014
Wageningen University & Research
2012-2014
Bepress (United States)
2011
Harbin Institute of Technology
2009
Institute of Mechanics
2009
AkzoNobel (Netherlands)
2001-2002
Abstract Extensive lattice‐Boltzmann simulations were performed to obtain the drag force for random arrays of monodisperse and bidisperse spheres. For systems, 35 different combinations Reynolds number Re (up = 1,000) packing fraction ϕ studied, whereas systems we also varied diameter ratio (from 1:1.5 1:4) composition, which brings total that considered 150. data was found be markedly from Ergun equation consistent with a correlation, based on similar type up 120. it correction...
Gas-solid fluidized beds are widely applied in many chemical processes involving physical and/or transformations, and for this reason they the subject of intense research engineering science. Over years, researchers have developed a large number numerical models gas-fluidized that describe gas-solid flow at different levels detail. In review, we discriminate these on basis whether Lagrangian or Eulerian approach is used gas particulate subsequently classify them into five main categories,...
We report on lattice-Boltzmann simulations of slow fluid flow past mono- and bidisperse random arrays spheres. have measured the drag force spheres for a range diameter ratios, mass fractions packing fractions; in total, we studied 58 different parameter sets. Our simulation data permeability agrees well with previous results experimental findings. On basis our individual force, formulated new relations both monodisperse polydisperse systems, based Carman–Kozeny equations; average deviation...
Fully resolved simulations of flow past fixed assemblies monodisperse spheres in face‐centered‐cubic array or random configurations, are performed using an iterative immersed boundary method. A methodology has been applied such that the computed gas–solid force is almost independent grid resolution. Simulations extend previously similar studies to a wider range solids volume fraction ( [0.1, 0.6]) and Reynolds number (Re [50, 1000]). new drag correlation combining existed correlations for...
The pyrolysis kinetics of low-density polyethylene, high-density polypropylene, and polystyrene has been studied at temperatures below 450 °C. In addition, a literature review on the low-temperature these polymers conducted revealed that scatter in reported kinetic data is significant, which most probably due to use simple first-order models interpret experimental data. This model type only applicable small conversion range, but was used by many authors over much wider range. this...
Chemical-looping combustion (CLC) has emerged as an alternative for conventional power production processes to intrinsically integrate and CO2 capture. In this work a new reactor concept CLC is proposed, based on dynamically operated packed bed reactors. With analytical expressions validated with more detailed numerical model, it demonstrated that constant, very high temperature air stream can be generated efficiently using reactors drive downstream gas turbine. The process consists of...
To evaluate quantitatively the results of gas−liquid absorption experiments, accurate liquid-phase diffusion coefficients and viscosities are needed. In this paper experimental values these quantities will be reported for binary systems carbon dioxide + water, methanol, ammonia methanol. The have been measured using Taylor−Aris dispersion method, with a falling ball viscometer at temperatures from 293 to 333 K. mole fraction ranged 0 0.312. correlated Arrhenius-type equations compared...
The discrete modelling and understanding of the particle dynamics in fluidized bed apparatuses, mixers, mills others are based on knowledge about physical properties particles their mechanical behaviour during slow, fast repeated stressing. In this paper model parameters (modulus elasticity, stiffness, yield pressure, restitution coefficient strength) spherical granules (γ-Al2O3, zeolites 4A 13X, sodium benzoate) with different have been measured by single compression impact tests. Starting...
Very fine sand is prepared in a well-defined and fully decompactified state by letting gas bubble through it. After turning off the stream, steel ball dropped on sand. On impact of ball, blown away all directions ("splash") an crater forms. When this cavity collapses, granular jet emerges driven straight into air. A second goes downwards air entrained during process, thus pushing surface material deep ground. The rises slowly towards surface, causing eruption. In addition to experiments...