The clustering instability in rapid granular and gas-solid flows

WD Fullmer, CM Hrenya - Annual Review of Fluid Mechanics, 2017 - annualreviews.org
Flows of solid particles are known to exhibit a clustering instability—dynamic microstructures
characterized by a dense region of highly concentrated particles surrounded by a dilute …

Review of cluster characteristics in circulating fluidized bed (CFB) risers

A Cahyadi, A Anantharaman, S Yang, SBR Karri… - Chemical Engineering …, 2017 - Elsevier
Particle clusters are well acknowledged to affect the hydrodynamics and overall
performance of gas-solid fluidized beds. Since one of the first reports on the clustering …

100 years of scaling up fluidized bed and circulating fluidized bed reactors

JW Chew, WCQ LaMarche, RA Cocco - Powder Technology, 2022 - Elsevier
This year, 2022, we celebrate the 100-year anniversary of the commercialization of the
fluidized bed reactor. In those years, many new processes have been developed, with many …

CFD-DEM simulations and experimental validation of clustering phenomena and riser hydrodynamics

AEC Varas, E Peters, JAM Kuipers - Chemical Engineering Science, 2017 - Elsevier
A combined numerical and experimental study of riser hydrodynamics is reported for the fast
fluidisation regime. The experimental data sets are used for validation of the CFD-DEM …

Application of machine learning methods to understand and predict circulating fluidized bed riser flow characteristics

JW Chew, RA Cocco - Chemical Engineering Science, 2020 - Elsevier
Abstract Machine learning methods were applied to circulating fluidized bed (CFB) riser
data. The goals were to (i) provide insights on various fluidization phenomena through …

A novel sound-based belt condition monitoring method for robotic grinding using optimally pruned extreme learning machine

X Zhang, H Chen, J Xu, X Song, J Wang… - Journal of Materials …, 2018 - Elsevier
A novel method based on sound signals is proposed to realize realtime quantitative
monitoring of abrasive belt conditions in robotic grinding system. Robotic belt grinding …

CFD study of mixing and segregation in CFB risers: Extension of EMMS drag model to binary gas–solid flow

Q Zhou, J Wang - Chemical Engineering Science, 2015 - Elsevier
Abstract The Energy Minimization Multi-Scale (EMMS) drag model, using Sauter mean
particle diameter to represent real particle size distribution, has proven to be effective in …

Approximate deconvolution model for the simulation of turbulent gas-solid flows: An a priori analysis

S Schneiderbauer, M Saeedipour - Physics of Fluids, 2018 - pubs.aip.org
Highly resolved two-fluid model (TFM) simulations of gas-solid flows in vertical periodic
channels have been performed to study closures for the filtered drag force and the Reynolds …

Analyzing external and internal membrane fouling by oil emulsions via 3D optical coherence tomography

TA Trinh, W Li, Q Han, X Liu, AG Fane… - Journal of Membrane …, 2018 - Elsevier
Membrane-based filtration is an emerging technique for processing oily wastewater.
Improving the efficiency of oil-water separation via membranes entails novel techniques for …

Clustering instabilities in sedimenting fluid–solid systems: critical assessment of kinetic-theory-based predictions using direct numerical simulation data

WD Fullmer, G Liu, X Yin, CM Hrenya - Journal of Fluid Mechanics, 2017 - cambridge.org
In this work the quantitative and qualitative ability of a kinetic-theory-based two-fluid model
(KT-TFM) is assessed in a state of fully periodic sedimentation (fluidization), with a focus on …