Multi-scale numerical simulation of fluidized beds: Model applicability assessment
作者机构：State Key Laboratory of Clean Energy UtilizationZhejiang UniversityHangzhou310027China Shanghai Institute for Advanced Study of Zhejiang UniversityShanghai200120China
出 版 物：《Particuology》 (颗粒学报(英文版))
年 卷 期：2023年第80卷第9期
页 面：11-41页
核心收录：
学科分类：080704[工学-流体机械及工程] 0817[工学-化学工程与技术] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）]
基 金：This work was supported by the National Natural ScienceFoundation of China(No.51925603) the Fundamental ResearchFunds for the Central Universities(No.2022ZFJH004)
主 题：Fluidized bed Dense gas-solid flows Multi-scale numerical methods Drag model Inter-particle collisions
摘 要：In the past few decades,multi-scale numerical methods have been developed to model dense gas-solidflow in fluidized beds with different resolutions,accuracies,and ***,ambiguity needsto be clarified in the multi-scale numerical simulation of fluidized beds:(i)the selection of the submodels,parameters,and numerical resolution;(ii)the multivariate coupling of operating conditions,bed configurations,polydispersity,and additional ***,a state-of-the-art review is performed to assess the applicability of multi-scale numerical methods in predicting dense gas-solid flow influidized 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 *** methods need more computational resources and thus are suitable for smaller-scale simulations to provide a database for closure ***-resolution methods require fewercomputational resources and thus underpin large-scale simulations to explore macro-scale *** validations need to be further conducted under multiple flow conditions and comprehensivemetrics(e.g.,velocity profiles at different heights,bubbles,or cluster characteristics)for furtherimprovement of the applicability of each numerical method.
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