典型文献
Heterogeneity analysis of gas-solid flow hydrodynamics in a pilot-scale fluidized bed reactor
文献摘要：
Mesoscale drag model is of crucial significance for the reliability and accuracy in coarse-grid Eulerian-Eulerian two-fluid model(TFM)simulations of gas-solid flow hydrodynamics in fluidized bed reactors.Although numerous mesoscale drag models have been reported in the literature,a systematic compar-ison of their prediction capability from the perspective of heterogeneity analysis is still lacking.In this study,in order to investigate the effect of several typical drag models on the hydrodynamic behaviors,the nonuniformity analysis and the sensitivity to material properties,extensive coarse-grid TFM simula-tions of a bubbling pilot-scale fluidized bed reactor are carried out.The results demonstrate that the mesoscale drag models outperform the empirical drag model in terms of nonuniformity due to the con-sideration of the influence of the mesoscale structures on the drag force in the bubbling region.Furthermore,the results reveal that our previously developed three-marker gradient-based drag model considering the solid concentration gradient exhibits satisfactory performance in predicting the bubbling flow hydrodynamics.Besides,the material-property-dependent drag model considering the explicit effect of material properties on drag corrections is most sensitive to the particle diameter.This work pro-vides guideline for possible future improvements of mesoscale models to simulate gas-solid flow more accurately and universally.
文献关键词：
中图分类号：
作者姓名：
Jiawei Liao;Litao Zhu;Zhenghong Luo
作者机构：
Department of Chemical Engineering,School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
文献出处：
引用格式：
[1]Jiawei Liao;Litao Zhu;Zhenghong Luo-.Heterogeneity analysis of gas-solid flow hydrodynamics in a pilot-scale fluidized bed reactor)[J].中国化学工程学报（英文版）,2022(10):117-129
A类：
B类：
Heterogeneity,analysis,gas,solid,flow,hydrodynamics,pilot,fluidized,bed,Mesoscale,drag,crucial,significance,reliability,accuracy,coarse,grid,Eulerian,two,TFM,simulations,reactors,Although,numerous,mesoscale,models,have,been,reported,literature,systematic,compar,ison,their,prediction,capability,from,perspective,heterogeneity,still,lacking,In,this,study,order,investigate,effect,several,typical,behaviors,nonuniformity,sensitivity,material,properties,extensive,bubbling,are,carried,results,demonstrate,that,outperform,empirical,terms,due,sideration,influence,structures,force,region,Furthermore,reveal,our,previously,developed,three,marker,gradient,considering,concentration,exhibits,satisfactory,performance,predicting,Besides,property,dependent,explicit,corrections,most,sensitive,particle,diameter,This,work,vides,guideline,possible,future,improvements,simulate,accurately,universally
AB值：
0.52803
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