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Arabian Journal for Science and Engineering

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26-07-2019 | Research Article - Chemical Engineering

Three-Dimensional Full-Loop Hydrodynamic Simulation of a Circulating Fluidized-Bed Gasifier: A Quantitative Assessment of Drag Models

Authors: Vikrant Sharma, Vijay Kumar Agarwal

Published in: Arabian Journal for Science and Engineering | Issue 12/2019

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Abstract

This article presents quantitative assessment of drag models based on their effect on hydrodynamics of a circulating fluidized bed (CFB). Three-dimensional full-loop computational fluid dynamics simulation using Euler granular multiphase model is carried out. Six drag models (EMMS, Gibilaro, Gidaspow, Schiller–Naumann, Syamlal–O’Brien and Wen–Yu) were employed, and simulated results of time-averaged solid volume fraction, solid axial velocity and static pressure are compared with the experimental data. Furthermore, a quantitative analysis is carried out using statistical parameters and parity plots. It was concluded that EMMS model is the most suitable model for simulation of a CFB as it is the only model capable of predicting heterogeneity of the bed, and simulation results agree well with the experimental data.

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Title: Three-Dimensional Full-Loop Hydrodynamic Simulation of a Circulating Fluidized-Bed Gasifier: A Quantitative Assessment of Drag Models
Authors: Vikrant Sharma
Vijay Kumar Agarwal
Publication date: 26-07-2019
Publisher: Springer Berlin Heidelberg
Published in: Arabian Journal for Science and Engineering / Issue 12/2019
Print ISSN: 2193-567X
Electronic ISSN: 2191-4281
DOI: https://doi.org/10.1007/s13369-019-04040-0

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