全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
化工学报  2015 

提升管内细长颗粒流化运动的气固多向耦合模型的构建

DOI: 10.11949/j.issn.0438-1157.20150445, PP. 4342-4349

Keywords: 细长颗粒气固两相流,提升管,建模,多向耦合,数值模拟

Full-Text   Cite this paper   Add to My Lib

Abstract:

细长颗粒气固两相流研究已成为气固两相流研究的重点问题之一。而各种细长颗粒在流场中的受力、运动模型构建以及细长颗粒/流场间的耦合关系的构建是细长颗粒两相流数值模拟研究的难点之一。在已经基于刚体动力学原理构建了细长粒子气固两相流单向耦合模型的基础上,结合基于κ-ε模型的球形粒子-流场气固间耦合关联式,并改进细长颗粒间碰撞模型,从而构建了细长颗粒气固两相流动多向耦合数值模拟平台。并且采用此平台对某一实际流化床内的细长粒子气固两相流场进行了数值模拟研究。研究表明,不同时间细长颗粒在流场内的停留位置具有较强的随机性;细长颗粒在流化运动过程中伴随有较明显的取向选择性;细长颗粒的存在会导致当地流场的速度、压强均有较为明显的下降。

References

[1]  Bernstein O, Shapiro M. Direct determination of the orientation distribution function of cylindrical particles immersed in laminar and turbulent shear flows [j]. Journal of Aerosol Science, 1994, 25(1): 113-136.
[2]  Lin Jianzhong, Lin Jiang, Shi Xing. Research on the effect of cylinder particles on the turbulent properties in particulate flows [J]. Applied Mathematics and Mechanics, 2002, 23(5): 483-488.
[3]  Lin Jianzhong(林建忠), Wang Changbin(王常斌), Shi Xing(石兴).Effects of wall on the sedimentation of cylindrical particles in the Newtonian fluid [J]. Chinese Journal of Applied Mathematics(应用力学学报), 2003, 20(4): 1-6.
[4]  Hilton J E, Mason L R, Cleary P W. Dynamics of gas-solid fluidised beds with non-spherical particle geometry [J]. Chemical Engineering Science, 2010, 65(5): 1584-1594.
[5]  Yin C, Rosendahl L, K?r K, et al. Modelling the motion of cylindrical particles in a nonuniform flow [J]. Chemical Engineering Science, 2003, 58(15): 3489-3498.
[6]  Fan L, Mao Z S, Wang Y D. Numerical simulation of turbulent solid-liquid two-phase flow and orientation of slender particles in a stirred tank [J]. Chemical Engineering Science, 2005, 60(24): 7045-7056.
[7]  Wang Yelong. Numerical study on sedimentation of mutual-collision cylindrical particles in the vertical channel [J]. Applied Mathematics and Mechanic, 2006, 27(7): 859-866.
[8]  Gore R, Crowe C. Effect of particle size on modulating turbulent intensity [J]. Int. J. Multiphase Flow, 1989, 15: 279-288.
[9]  Paschkewitz J S, Dubief Y, Dimitropoulos C D, et al. Numerical simulation of turbulent drag reduction using rigid fibres [J]. J. Fluid Mech., 2004, 518: 281-317.
[10]  Zhang Weifeng, Lin Jianzhong. Research on the motion of particles in the turbulent pipe flow of fiber suspensions [J]. Applied Mathematics and Mechanics, 2004, 25(7): 677-685.
[11]  Shuen J, Chen L, Faeth G. Evaluation of a stochastic model of particle dispersion in a turbulent round jet [J]. AIChE J., 1983, 29(1): 167-170.
[12]  Matteo C, Mathiesen V. Numerical simulation of particulate flow by the Eulerian-Lagrangian and the Eulerian-Eulerian approach with application to a fluidized bed [J]. Comput. Chem. Eng., 2005, 29(2): 291-304.
[13]  Xiong Yuanquan(熊源泉), Yuan Zhunlin(袁竹林),Zhang Mingyao(章名耀). Three-dimensional numerical simulation on conveying properties of gas-solid injector under pressurization [J]. Journal of Chemical Industry and Engineering (China) (化工学报), 2004, 55(10): 1638-1643.
[14]  Lin Jianzhong, Lin Jiang, Shi Xing. Research on the effect of cylinder particles on the turbulent properties in particulate flows [J]. Applied Mathematics and Mechanics, 2002, 23(5): 483-488.
[15]  Qi D W. Simulations of fluidization of cylindrical multiparticles in a three-dimensional space [J]. Int J. Multiphase Flow, 2001, 27(1): 107-118.
[16]  Cai Jie(蔡杰), Fan Fengxian(凡凤仙), Wu Xuan(吴晅), et al. Effects of inter-particle collisions on the orientation distribution of slender particles in gas-solid flows [J]. Proceedings of the CSEE(中国电机工程学报), 2008, 28(17): 66-69.
[17]  Crowe C T, Troutt T R, Chung J N. Numerical models for two-phase turbulent flows [J]. Annual Review of Fluid Mechanics, 1996, 28: 11-43.
[18]  Wen C Y, Yu Y H. Mechanics of fluidization [J]. Chem. Eng. Prog. Sump. Serie., 1966, 62: 100-113.
[19]  Sabine T C, Michael G, Efstathios E M. Drag coefficients of irregularly shaped particles [J]. Powder Technology, 2004, 139: 21-32.
[20]  Elgobashi S. Particle-laden turbulent flows: direct simulation and closure models [J]. Applied Scientific Research, 1991, 48: 301-314.
[21]  Simonin O, Deutsch E, Miniter J P. Eulerian prediction of the fluid/particle correlated motion in turbulent two-phase flows [J]. Applied Scientific Research, 1993, 51: 275-283.
[22]  Cai Jie(蔡杰), Peng Zhengbiao(彭正标), Wu Xuan(吴晅), et al. Simulation study on the effects of wall on the fluidizing features of slender particles in gas-solid flows [J]. Proceedings of the CSEE(中国电机工程学报), 2008, 28(23): 71-74.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133