Abstract
This review study mainly focuses on the
application of Computational Fluid Dynamics (CFD) in the
investigation of gas-solids multiphase flow systems and one
would get a general overview of gas-solids flow models by
having an insight to this article. The applicability and
limitations of conventional models and recent developments
of existing multiphase models for the prediction of gas-solids
flows are thoroughly overviewed. Use of conventional
Eulerian-Eulerian model for granular flows and Lagrangian
approach incorporated with Discrete Element Method
(CFD-DEM) are quite well proven, however some limitations
restrict the use of these models in wide range of applications.
Therefore, these models are being under improvements and
some new models have been introduced to model gas-solids
flows, as example Dense Discrete Phase Model incorporated
with Kinetic Theory of Granular Flow (DDPM-KTGF),
Dense Discrete Phase Model incorporated with Discrete
Element Method (DDPM-DEM) and Computational Particle
Fluid Dynamics (CPFD) numerical scheme incorporated
with the MultiPhase-Particle-In-Cell (MP-PIC) method.
These models have been validated for certain applications
under certain conditions, however, further validation of
these models in fundamental and applied research is still a
necessity.
application of Computational Fluid Dynamics (CFD) in the
investigation of gas-solids multiphase flow systems and one
would get a general overview of gas-solids flow models by
having an insight to this article. The applicability and
limitations of conventional models and recent developments
of existing multiphase models for the prediction of gas-solids
flows are thoroughly overviewed. Use of conventional
Eulerian-Eulerian model for granular flows and Lagrangian
approach incorporated with Discrete Element Method
(CFD-DEM) are quite well proven, however some limitations
restrict the use of these models in wide range of applications.
Therefore, these models are being under improvements and
some new models have been introduced to model gas-solids
flows, as example Dense Discrete Phase Model incorporated
with Kinetic Theory of Granular Flow (DDPM-KTGF),
Dense Discrete Phase Model incorporated with Discrete
Element Method (DDPM-DEM) and Computational Particle
Fluid Dynamics (CPFD) numerical scheme incorporated
with the MultiPhase-Particle-In-Cell (MP-PIC) method.
These models have been validated for certain applications
under certain conditions, however, further validation of
these models in fundamental and applied research is still a
necessity.