Particle image velocimetry investigations on multiphase flow in fluidized beds: a review

A Neogi, HK Mohanta, PC Sande - Flow Measurement and Instrumentation, 2023 - Elsevier
Abstract Fluidized Beds (FBs) are widely employed in the petroleum and coal energy sector
because they offer excellent contact, both in terms of high surface area and long times. The …

High speed imaging of particle flow fields in CFB risers

F Shaffer, B Gopalan, RW Breault, R Cocco, SBR Karri… - Powder technology, 2013 - Elsevier
Particle flows of high particle concentration are important in many fields, including chemical
processing, pharmaceutical processing, energy conversion and powder transport …

Numerical simulation and experimental study of the gas–solid flow behavior inside a full-loop circulating fluidized bed: evaluation of different drag models

Y Xu, J Musser, T Li, B Gopalan, R Panday… - Industrial & …, 2018 - ACS Publications
Both experimental and computational studies of the fluidization of high-density polyethylene
(HDPE) particles in a small-scale full-loop circulating fluidized bed (CFB) are conducted …

Assessment of different discrete particle methods ability to predict gas-particle flow in a small-scale fluidized bed

L Lu, B Gopalan, S Benyahia - Industrial & Engineering Chemistry …, 2017 - ACS Publications
Several discrete particle methods exist in the open literature to simulate fluidized bed
systems, such as discrete element method (DEM), time-driven hard sphere (TDHS), coarse …

Comparison and validation of various drag models for fluidization characteristics of bubble fluidized beds with a high-speed particle image velocimetry experiment

C Han, H Wang, L Yang, Y Yang - Physics of Fluids, 2023 - pubs.aip.org
Bubbling liquefaction of dense particles is one of the most common forms of industrial
fluidization in gas–solid flow systems. Computational fluid dynamics and the discrete …

Measurements of pressure drop and particle velocity in a pseudo 2-D rectangular bed with Geldart Group D particles

B Gopalan, M Shahnam, R Panday, J Tucker… - Powder Technology, 2016 - Elsevier
A small scale pseudo 2-D bed of dimension 0.075 m× 0.23 m× 1.22 m was utilized to
measure the pressure drop and velocity statistics of Geldart Group D nylon beads. The …

Transfer learning for radioactive particle tracking

G Lindner, S Shi, S Vučetić, S Mišković - Chemical Engineering Science, 2022 - Elsevier
Radioactive particle tracking (RPT) is a non-invasive technique used to monitor opaque
multiphase flow systems. Achieving highly accurate particle tracing is challenging and time …

MFIX simulation of NETL/PSRI challenge problem of circulating fluidized bed

T Li, JF Dietiker, M Shahnam - Chemical engineering science, 2012 - Elsevier
In this paper, numerical simulations of NETL/PSRI challenge problem of circulating fluidized
bed (CFB) using the open-source code Multiphase Flow with Interphase eXchange (MFIX) …

Performance of drag models for simulation of fluidized beds with Geldart D particles

NV Koralkar, M Bose - Advanced Powder Technology, 2016 - Elsevier
CFD-DEM algorithm which couples the macroscopic governing equations for gas phase and
the second law of motions for individual particles in the system, is more accurate than the …

Image analysis measurements of particle coefficient of restitution for coal gasification applications

LTM Gibson, B Gopalan, SV Pisupati, LJ Shadle - Powder technology, 2013 - Elsevier
New robust Lagrangian computational fluid dynamic (CFD) models are powerful tools that
can be used to study the behavior of a diverse population of coal particle sizes, densities …