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Turbulent clustering of point particles and finite-size particles in isotropic turbulent flows

文献类型：期刊论文

作者Jin GD(晋国栋); Wang Y(王赟); Zhang J(张健); He GW(何国威)
刊名INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
出版日期2013-08-21
卷号52期号:33页码:11294-11301
通讯作者邮箱hgw@lnm.imech.ac.cn
关键词Particle clustering point-particles finite-size particles lattice Boltzmann method pseudo-spectral method
ISSN号0888-5885
产权排序[Jin, Guodong; Wang, Yun; Zhang, Jian; He, Guowei] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
通讯作者He, GW (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
中文摘要Particle clustering in turbulent flows is ubiquitous in particle-fluid two-phase flows in the riser of fast fluidized beds. Controlling the level of clustering is very crucial for improving the reactive efficiency in such flows. The present paper is devoted to numerically studying particle clustering in turbulent flows, where both point particles and finite-size particles are taken into account, respectively. A pseudospectral method with the particle tracking method is used to simulate the point particle clustering in the forced isotropic turbulent flows, while the lattice Boltzmann method is used to simulate the finite-size particles in decaying isotropic turbulent flows. It is observed that the mean drift velocity, caused by forces such as gravity, could reduce the level of particle clustering for point particles. However, the particle clustering is very weak for the particles of sizes larger than the characteristic viscous scales of turbulent flows, which is consistent with the previous experimental results. The observations suggest that the mean drift velocity and particle sizes can be used to control the level of particle clustering in chemical reactors.
学科主题流体力学 ; 湍流 ; 多相流
分类号二类/Q2
收录类别SCI ; EI
资助信息NSFC [11072247, 11021262, 11232011]; NSAF [U1230126]
原文出处http://dx.doi.org/10.1021/ie303507d
语种英语
WOS记录号WOS:000323536000008
公开日期2013-09-27
源URL[http://dspace.imech.ac.cn/handle/311007/47459]  
专题力学研究所_非线性力学国家重点实验室
推荐引用方式
GB/T 7714		 Jin GD,Wang Y,Zhang J,et al. Turbulent clustering of point particles and finite-size particles in isotropic turbulent flows[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2013,52(33):11294-11301.
APA Jin GD,Wang Y,Zhang J,&He GW.(2013).Turbulent clustering of point particles and finite-size particles in isotropic turbulent flows.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,52(33),11294-11301.
MLA Jin GD,et al."Turbulent clustering of point particles and finite-size particles in isotropic turbulent flows".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 52.33(2013):11294-11301.

入库方式： OAI收割

来源：力学研究所

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