Three-dimensional numerical study of heat and mass transfer in fluidized beds with spray nozzle

被引：10

作者：

Nagaiah, Chamakuri ^{[1
]}

Warnecke, Gerald ^{[1
]}

Heinrich, Stefan ^{[2
]}

Peglow, Mirko ^{[3
]}

机构：

[1] Otto Von Guericke Univ, Inst Anal & Numer, D-39106 Magdeburg, Germany

[2] Otto Von Guericke Univ, Inst Proc Equipment & Environm Technol, D-39106 Magdeburg, Germany

[3] Otto Von Guericke Univ, Inst Proc Engn, D-39106 Magdeburg, Germany

来源：

COMPUTERS & CHEMICAL ENGINEERING | 2008年 / 32卷 / 12期

关键词：

Fluidized beds; Granulation; Heat and mass transfer; Liquid injection; Convection-diffusion-reaction equations; Finite element method; Backward Euler method; Parallelization;

D O I：

10.1016/j.compchemeng.2008.02.009

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The numerical computations of temperature and concentration distributions inside a fluidized bed with spray injection in three-dimensions are presented. A continuum model, based on rigorous mass and energy balance equations developed from Nagaiah et al., is used for the three-dimensional simulations. The three-dimensional model equation for nozzle spray is reformulated in comparison to Heinrich. For solving the non-linear partial differential equations with boundary conditions a finite element method is used for space discretization and an implicit Euler method is used for time discretization. The time-dependent behavior of the air humidity, air temperature, degree of wetting, liquid film temperature and particle temperature is presented using two different sets of experimental data. The presented numerical results are validated with the experimental results. Finally, the parallel numerical results are presented using the domain decomposition methods. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2877 / 2890

页数：14

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