Continuum theory for dense gas-solid flow: A state-of-the-art review

J Wang - Chemical Engineering Science, 2020 - Elsevier
Gas-solid fluidization technology has been commercialized in many industrial applications
since its implementation in the fluid catalytic cracking process in the early 1940s, however …

A volume-filtered description of compressible particle-laden flows

GS Shallcross, RO Fox, J Capecelatro - International Journal of Multiphase …, 2020 - Elsevier
In this work, we present a rigorous derivation of the volume-filtered viscous compressible
Navier–Stokes equations for disperse two-phase flows. Compared to incompressible flows …

A hybrid mesoscale closure combining CFD and deep learning for coarse-grid prediction of gas-particle flow dynamics

B Ouyang, LT Zhu, YH Su, ZH Luo - Chemical Engineering Science, 2022 - Elsevier
This study develops filtered two-fluid model (fTFM) closures by coupling computational fluid
dynamics (CFD) and deep learning algorithm (DL) for enabling coarse-grid simulations at …

Development of data-driven filtered drag model for industrial-scale fluidized beds

Y Jiang, X Chen, J Kolehmainen, IG Kevrekidis… - Chemical Engineering …, 2021 - Elsevier
Simulations of large-scale gas-particle flows using coarse meshes and the filtered two-fluid
model approach depend critically on the constitutive model that accounts for the effects of …

A material-property-dependent sub-grid drag model for coarse-grained simulation of 3D large-scale CFB risers

LT Zhu, YX Liu, JX Tang, ZH Luo - Chemical Engineering Science, 2019 - Elsevier
Developing, verifying and validating sub-grid methods is of crucial significance for enabling
accurate coarse-grained two-fluid modeling of rapid gas-fluidized flows. However, very few …

Continuum modeling of gas–particle flows: an overview

S Schneiderbauer - Acta Mechanica, 2024 - Springer
In this review paper, we provide a brief overview of the recent advances in the continuum
modeling of gas–particle flows. First, we focus on the kinetic theory-based two-fluid models …

An enhanced correlation for gas-particle heat and mass transfer in packed and fluidized bed reactors

LT Zhu, YX Liu, ZH Luo - Chemical Engineering Journal, 2019 - Elsevier
Abstract Particle-resolved (PR) high-fidelity simulations, eg, direct numerical simulation
(DNS), have emerged as a powerful tool to precisely capture the full details of complex fluid …

A dynamic anisotropic spatially-averaged two-fluid model for moderately dense gas-particle flows

S Rauchenzauner, S Schneiderbauer - International Journal of Multiphase …, 2020 - Elsevier
We present an anisotropic, dynamic multi-phase turbulence model for moderately dense gas-
particle flows by spatially averaging the kinetic-theory based two-fluid model …

[HTML][HTML] Favre-filtered LES-VOF of two-phase flows with eddy viscosity-based subgrid closure models: An a-posteriori analysis

M Saeedipour, S Schneiderbauer - International Journal of Multiphase …, 2021 - Elsevier
Developing functional closure models for all the subgrid scale (SGS) physics in the large
eddy simulation (LES) of turbulent two-phase flows is yet a challenging task due to the …

[HTML][HTML] A dynamic multiphase turbulence model for coarse-grid simulations of fluidized gas-particle suspensions

S Rauchenzauner, S Schneiderbauer - Chemical Engineering Science, 2022 - Elsevier
Abstract The Spatially-Averaged Two-Fluid Model (SA-TFM) is a functional multiphase
turbulence model aimed at predicting the influence of unresolved meso-scale structures on …