首页|Considering solid shear stress in MP-PIC simulation of a CFB riser

Considering solid shear stress in MP-PIC simulation of a CFB riser

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To enable successful multi-phase particle-in-cell(MP-PIC)simulations of circulating fluidized beds(CFBs),both the interphase drag force and interparticle collisions need to be carefully modeled.Particle collisions are usually represented by the solid stress consisting of the normal and shear components,in which the normal stress was found to have a leading role in the numerical stability of MP-PIC simula-tions,whereas the impact of the shear stress has seldom been reported.In this work,the effects of the solid shear stress are investigated by using two-dimensional simulations of the moderately dense laboratory-scale CFB riser with in-house MP-PIC code implemented on MFIX open-source platform.Cases including only normal solid stress and those considering both normal and shear solid stresses are simulated.The results of solids flux,axial and radial solids profiles are compared with available exper-imental data.The results show that the solid shear stress plays a minor role on the accuracy of simu-lation,and the increase of PPP(number particles per parcel)leads to a lower accuracy of simulation.

SimulationFluidizationMultiphase particle-in-cell(MP-PIC)Solid shear stress

Tagir Kadyrov、Fei Li、Atta Ullah

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Nature-inspired Engineering Center,University of Tyumen,Tyumen 625003,Russia

Laboratory of Theory and Optimization of Chemical and Technological Processes,University of Tyumen,Tyumen,625003,Russia

State Key Laboratory of Multi-phase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China

Department of Chemical Engineering,Pakistan Institute of Engineering & Applied Sciences,Islamabad 45650,Pakistan

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project of the Federal Academic Leadership Program"Priority 2030"Tyumen Oblast GovernmentWest-Siberian Interregional Science and Education Center's project国家自然科学基金国家自然科学基金国家自然科学基金State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of SciencesPakistan Science Foundation(PSF)

89-DON3221611420065187621221821005MPCS-2021-A-06PSF-NSFC-IV/Eng/C-PIEAS25

2024

10.1016/j.partic.2023.10.013

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)：2024.89(6)
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