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Multi-scale numerical simulation of fluidized beds: Model applicability assessment by Shuai Wang; Chenshu Hu; Kun Luo; Jiahui Yu; Jianren Fan is a Engineering article available to read on EtoBox.

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In the past few decades, multi-scale numerical methods have been developed to model dense gas-solid flow in fluidized beds with different resolutions, accuracies, and efficiencies. However, ambiguity needs to be clarified in the multi-scale numerical simulation of fluidized beds: (i) the selection of the sub-models, parameters, and numerical resolution; (ii) the multivariate coupling of operating conditions, bed configurations, polydispersity, and additional forces. Accordingly, a state-of-the-art review is performed to assess the applicability of multi-scale numerical methods in predicting dense gas-solid flow in fluidized beds at specific fluidization regimes (e.g., bubbling fluidization region, fast fluidization regime), with a focus on the inter-particle collision models, inter-phase interaction models, collision parameters, and polydispersity effect. A mutual restriction exists between resolution and efficiency. Higher-resolution methods need more computational resources and thus are suitable for smaller-scale simulations to provide a database for closure development. Lower-resolution methods require fewer computational resources and thus underpin large-scale simulations to ex

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Author

Shuai Wang; Chenshu Hu; Kun Luo; Jiahui Yu; Jianren Fan

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)