|
|||||
|
|
| Bubble dynamics in a two-dimensional gas-solid fluidized bed | |
| 作者姓名： | Ruoyu Hong Zhiqiang Ren Jianmin Ding M. Kawaji Hongzhong Li |
| 作者单位： | [1]Chemical Engineering Department ＆ Key Laboratory of Organic Synthesis, Soochow University, Dushuh, SIP, Suzhou 215123, China [2]Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China [3]IBM, HYDA/050-3 C202, 3605 Highway 52 North, Rochester, MN 55901, USA [4]Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ont. M5S 3E5, Canada [5]不详, University of Toronto, Toronto, Ont. M5S 3E5, Canada |
| 摘 要： | Related referential studies on gas-solid two-phase flows were briefly reviewed. Bubble ascending in a two-dimensional （2D） gas-solid fluidized bed was studied both experimentally and numerically. A modified continuum model expressed in the conservation form was used in numerical simulation. Solid-phase pressure was modeled via local sound speed; gas-phase turbulence was described by the K-ε two-equation model. The modified implicit multiphase formulation （IMF） scheme was used to solve the model equations in 2D Cartesian/cylindrical coordinates. The bubble ascending velocity and particle motion in the 2D fluidized bed were measured using the photochromic dye activation （PDA） technique, which was based on UV light activation of particles impregnated with the dye. Effects of bed height and superficial gas velocity on bubble formation and ascent were investigated numerically. The numerically obtained bubble ascending velocities were compared with experimental measurements. Gas bubble in jetting gas-solids fluidized bed was also simulated numerically. |
| 关 键 词： | 气固硫化床 数值模拟 流动可视化 泡沫流 |
| 收稿时间： | 15 February 2006 |
| 修稿时间： | 2006-02-15 |
Bubble dynamics in a two-dimensional gas-solid fluidized bed |
|
| Ruoyu Hong Zhiqiang Ren Jianmin Ding M. Kawaji Hongzhong Li.Bubble dynamics in a two-dimensional gas-solid fluidized bed[J].China Particuology,2007,5(4):284-294. | |
| Authors: | Ruoyu Hong Zhiqiang Ren Jianmin Ding MKawaji Hongzhong Li |
| Institution: | a Chemical Engineering Department &; Key Laboratory of Organic Synthesis, Soochow University, Dushuh, SIP, Suzhou 215123, China b Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China c IBM, HYDA/050-3 C202, 3605 Highway 52 North, Rochester, MN 55901, USA d Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ont. M5S 3E5, Canada |
| Abstract: | Related referential studies on gas-solid two-phase flows were briefly reviewed. Bubble ascending in a two-dimensional (2D) gas-solid fluidized bed was studied both experimentally and numerically. A modified continuum model expressed in the conservation form was used in numerical simulation. Solid-phase pressure was modeled via local sound speed; gas-phase turbulence was described by the K-? two-equation model. The modified implicit multiphase formulation (IMF) scheme was used to solve the model equations in 2D Cartesian/cylindrical coordinates. The bubble ascending velocity and particle motion in the 2D fluidized bed were measured using the photochromic dye activation (PDA) technique, which was based on UV light activation of particles impregnated with the dye. Effects of bed height and superficial gas velocity on bubble formation and ascent were investigated numerically. The numerically obtained bubble ascending velocities were compared with experimental measurements. Gas bubble in jetting gas-solids fluidized bed was also simulated numerically. |
| Keywords: | Fluidization Numerical simulation Flow visualization Bubble dynamics |
| 本文献已被 维普 万方数据 ScienceDirect 等数据库收录！ | |