A reduced model for particle calcination for use in DEM/CFD simulations

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外文摘要：We treat the accurate simulation of the calcination reaction in particles,where the particles are large and,thus,the inner-particle processes must be resolved.Because these processes need to be described with coupled partial differential equations(PDEs)that must be solved numerically,the computation times for a single particle are too high for use in simulations that involve many particles.Simulations of this type arise when the Discrete Element Method(DEM)is combined with Computational Fluid Dynamics(CFD)to investigate industrial systems such as quicklime production in lime shaft kilns.We show that,based on proper orthogonal decomposition and Galerkin projection,reduced models can be derived for single particles that provide the same spatial and temporal resolution as the original PDE models at a considerably reduced computational cost.Replacing the finite volume particle models with the reduced models results in an overall reduction of the reactor simulation time by about 40％ for the sample system treated here.

外文关键词：

CalcinationReactive bulkModel reductionDiscrete element methodGalerkin projection

作者：

Lucas Mieg、Torben Bergold、Enric Illana Mahiques、Viktor Scherer、Martin M?nnigmann

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作者单位：

Automatic Control and System Theory,Ruhr University Bochum,Germany

Energy Plant Technology,Ruhr University Bochum,Germany

基金：

Deutsche Forschungsgemeinschaft(DFG,German Research Foundation)Gef?rdert durch die Deutsche Forschungsgemeinschaft(DFG)

项目编号：

422037413-TRR 287422037413-TRR 287

出版年：

2024

DOI：

10.1016/j.partic.2024.07.004

颗粒学报(英文版)

中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD

影响因子：0.632

ISSN：1674-2001

年,卷(期)：2024.93(10)