期刊文献+

亚颗粒尺度颗粒群运动三维直接数值模拟 被引量:1

Sub-particle Scale Direct Numerical Simulation of Particulate Flows in Three Dimension
下载PDF
导出
摘要 提出一种基于有限元的虚拟区域法,可在亚颗粒尺度上实现对三维颗粒群运动的高效直接数值模拟;基于虚拟区域法的思想将颗粒视为浸入在背景网格中的有限大小区域而非零维点,在有限元方法的离散方程中引入体现颗粒作用的动量方程源项以保证颗粒的刚体运动;给出了三维虚拟区域法的实现方式与数值检验结果,并对管道中的颗粒群实际运动过程进行了直接数值模拟,得到了颗粒群与流场相互作用的非稳态结果。结果表明,虚拟区域法不仅能够处理三维颗粒运动的颗粒边界条件,不需要重新划分网格,而且还可以用于进行多颗粒运动系统的亚颗粒尺度直接数值模拟,最终得到详细的速度场和受力结果。 A three dimensional fictitious domain method was proposed to perform direct numerical simulation of complex particulate flows efficiently. Based on the fictitious domain point of view, the three dimensional particles were immersed in the background mesh, and the source terms were added to impose rigid body movement constraint of solid particles, incorporating the finite element discretization of background mesh equations. The detail of implementing three dimensional fictitious domain method was discussed and the method was validated. A particle cluster movement problem was solved and the results were illustrated. The results show that the fictitious domain method is proved to be able to handle the moving particles boundary conditions, and is suitable to simulate movements of multi-particle system in sub-particle scale. Detailed velocity and force results are obtained.
作者 刘恺 由长福
出处 《中国粉体技术》 CAS 北大核心 2014年第5期1-5,共5页 China Powder Science and Technology
基金 国家自然科学基金项目 编号:51390493 51076083
关键词 颗粒群运动 虚拟区域法 直接数值模拟 亚颗粒尺度 Ke particulate flows fictitious domain method direct numerical simulation sub-particle scale
  • 相关文献

参考文献11

  • 1YOU C F, ZHAO H L, CAI Y, et al. Experimental investigation of interparticle collision rate in particulate flow[J]. International Journal of Multiphase Flow, 2004, 30(9): 112 1- 1138.
  • 2YOU C F, ZHAO H L, XU X C, et al. Effect of spatial inhomogeneity and temporal fluctuation of particle distributions on interparticle collision rate in particulate flows[J]. Powder Technology, 2007, 172(3): 188-192.
  • 3WU X, WANG Q, LUO Z, et al. Experimental investigation of interparticle collision in the upper dilute zone of a cold CFB riser[J]. International Journal of Multiphase Flow, 2008, 34(10):924-930.
  • 4郑凯,由长福.中温干法烟气脱硫反应器中脱硫剂颗粒磨耗过程的数值模拟[J].中国粉体技术,2012,18(3):1-5. 被引量:3
  • 5YU Z, SHAO X. Direct numerical simulation of particulate flows with a fictitious domain method[J]. International Journal of Multiphase Flow, 2010,36: 127-134.
  • 6NAJM H N, KNIO O M. Modeling low Mach number reacting flow with detailed chemistry and transport[J]. J Sci Comput, 2005, 25: 263- 287.
  • 7NAJM H N, WYCKOFF P S, KNIO O M. A semi-inlplicit numerical scheme forreacting flow: I. stiffchemistry[J]. Journal of Computational Physics, 1998, 143: 381-402.
  • 8LAW C K. Combustion physics[M]. New York : Cambridge University Press, 2006.
  • 9KNIO O M, NAJM H N, WYCKOFF P S. A semi-implicit numerical scheme for reacting flow: II. stiff, operator-split formulation[J]. Journal of Computational Physics, 1999, 154: 428-467.
  • 10JEONG J, HUSSIAN F. On the identification of a vortex[J]. Journal of Fluid Mechanics, 1995, 285: 69-94.

二级参考文献7

  • 1ZHANG Jie, YOU Changfu, QI Haiying, et al. Effect of operating parameters and reactor structure on moderate temperature dry desulfu- rization [J]. Environmental Science and Technology, 2006, 40 ( 13 ) 4300-4305.
  • 2GIDASPOW D. Multiphase flow and fluidization[M]. Boston : Academic Press, 1994.
  • 3MARCHISIO D L, FOX R O. Solution of population balance equations using the direct quadrature method of moments [J]. Journal of AerosolScience, 2005, 36(1 ): 43-73.
  • 4FAN R, MARCHISIO D L, FOX R O. Application of the direct quadrature method of moments to polydisperse gas-solid fluidized beds[J]. Powder Technology, 2004, 139 ( 1 ) : 7-20.
  • 5MARCHISIO D L, DENNIS R D, FOX R O. Quadrature method of moments for aggregation-breakage processes[J]. Journal of Colloid and Interface Science, 2003,258(2): 322-334.
  • 6GOLDSCHMIDT M. Hydrodynamic modeling of fluidized bed spray granulation[D]. Enschede :Twente University, 2001.
  • 7LI Yuan, YOU Changfu, SONG Chenxing. Adhesive carrier particles for rapidly hydrated sorbent for moderate-temperature dry flue gas desulfurization[J]. Environmental Science and Technology, 2010, 44 (12) : 4692-4696.

共引文献2

同被引文献12

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部