Computational fluid dynamics for dense gas–solid fluidized beds: a multi-scale modeling strategy
- 作者：van der Hoef ; M.A. ; van Sint Annaland ; M. ; Kuipers ; J.A.M.
- 关键词：Fluidization ; Multiphase flow ; Simulation ; Discrete particle model ; CFD ; Kinetic theory
- 刊名：Chemical Engineering Science
- 出版年：2004
- 期刊代码：18_00092509
- 类别：ce
- 出版时间：November - December, 2004
- 卷：59
- 期：22-23
- 页码：5157-5165
- 文件大小：396 K
摘要
Dense gas–particle flows are encountered in a variety of industrially important processes for large scale production of fuels, fertilizers and base chemicals. The scale-up of these processes is often problematic, which can be related to the intrinsic complexities of these flows which are unfortunately not yet fully understood despite significant efforts made in both academic and industrial research laboratories. In dense gas–particle flows both (effective) fluid–particle and (dissipative) particle–particle interactions need to be accounted for because these phenomena, to a large extent, govern the prevailing flow phenomena, i.e. the formation and evolution of heterogeneous structures. These structures have significant impact on the quality of the gas–solid contact and as a direct consequence thereof strongly affect the performance of the process.