Particle clustering (mesoscale structure) of high-flux gas–solid circulating fluidized bed

C Wang, C Li, X Lan, Y Wu, J Gao - Particuology, 2020 - Elsevier
Particle clustering is an important dynamic phenomenon in circulating-fluidized-bed (CFBs)
systems, and has been suggested as a key contributing factor to the non-uniform …

Micro-flow structure at regime transition from bubbling to turbulent fluidization in a fluidized bed

C Yan, Y Yuan, X Wei, J Zhu - Particuology, 2024 - Elsevier
Gas-solid fluidized beds have found extensive utilization in frontline manufacturing, in
particular as low-velocity beds. The fluidization status, the bubbling or turbulent flow regime …

The development of a generalized riser flow regime map based upon higher moment and chaotic statistics using electrical capacitance volume tomography (ECVT)

RW Breault, J Weber, LJ Shadle - Powder Technology, 2020 - Elsevier
Dynamic analyses have been applied to the temporal signals from an Electro Capacitance
Volume Tomography instrument located near mid-height on the riser of an industrial-scale …

Parametric behavior of a CO2 capture process: CFD simulation of solid-sorbent CO2 absorption in a riser reactor

RW Breault, ED Huckaby - Applied energy, 2013 - Elsevier
Abstract The National Energy Technology Laboratory as well as other institutions are
developing a variety of technology concepts as alternatives to liquid-amine based …

Experimental exploration of particle cluster characteristics in the gas-solid diameter-varying fluidized bed

G Wu, X Yang, Y He - Powder Technology, 2023 - Elsevier
Particle cluster motions play a significant role in the gas-solid suspension flow. In this work,
systematical experiments were carried out to deeply reveal the complex mechanisms of …

Analysis of dissipative mechanisms of cluster heterogeneous structures in gas–solid riser

J Xiaoxue, W Shuyan, S Baoli, L Huilin - Chemical Engineering Science, 2021 - Elsevier
In present study, a model of the criterion for cluster heterogeneous flow is presented in terms
of the rates of hydrodynamic and collisional energy dissipations of the occurrence of particle …

Two-fluid model simulations of the national energy technology laboratory bubbling fluidized bed challenge problem

M Lungu, H Wang, J Wang, Y Yang… - Industrial & Engineering …, 2016 - ACS Publications
Numerical simulations using the Gidaspow and Syamlal-O'Brien drag models have been
performed based on the National Energy Technology Laboratory small scale challenge …

Capturing the instantaneous flow structure in gas-solid circulating fluidized bed using high-speed imaging and fiber optic sensing

X Wei, J Zhu - Chemical Engineering Science, 2019 - Elsevier
Knowing the instantaneous flow structure in a gas-solid circulating fluidized bed (CFB) is
extremely crucial for the understanding of fast fluidization and the development of numerical …

Identification of mesoscale flow in a bubbling and turbulent gas–solid fluidized bed

L Niu, Y Huang, Z Chu, M Cai, M Liu - Industrial & Engineering …, 2019 - ACS Publications
Based on the moment consistency principle, the bubble threshold was determined by using
the traversing method. A novel approach was proposed to identify bubbles and …

A DEM simulation of dry and wet particle flow behaviors in riser

M Wang, W Zhu, Q Sun, X Zhang - Powder technology, 2014 - Elsevier
In the present paper, the flow characteristics of dry and wet particles in circulating fluidized
bed riser are simulated by using the Euler–Lagrange approach, in which the solid phase is …