鼓泡流态化一直是稠密气固多相流研究领域中的热点,本文用计算流体力学-离散单元方法(CFD-DEM)对典型鼓泡流态化过程进行模拟并针对影响计算结果的重要参数进行敏感性分析,旨在验证程序的可靠性、精确度,并进一步分析模型参数对结果的影响.模拟结果真实还原了鼓泡流态化的流动情形,发现颗粒参数如杨氏模量对结果的影响较小,而静摩擦系数对结果影响较大,颗粒碰撞切向阻尼可以忽略.模拟边界条件对结果的影响主要体现在边壁附近,对中心区域统计量变化影响很小.此外,还发现不同网格尺度对模拟结果有明显影响.
参考文献
| [1] | J. M. Link;N. G. Deen;J. A. M. Kuipers .PEPT and Discrete Particle Simulation Study of Spout-Fluid Bed Regimes[J].AIChE Journal,2008(5):1189-1202. |
| [2] | C.R.Miiller;D.J.Holland;A.J.Sederman .Granular temperature:Comparison of Magnetic Resonance measurements with Discrete Element Model simulations[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2008(2):241-253. |
| [3] | Christoph R. Müiler,Stuart A. Scott,Daniel J. Holland,Belinda C. Clarke,Andrew J. Sederman,John S. Dennis,Lynn F. Gladden.Validation of a discrete element model using magnetic resonance measurements[J].中国颗粒学报（英文版）,2009(04):297-306. |
| [4] | Hoomans BPB.;Briels WJ.;Vanswaaij WPM.;Kuipers JAM. .DISCRETE PARTICLE SIMULATION OF BUBBLE AND SLUG FORMATION IN A TWO-DIMENSIONAL GAS-FLUIDISED BED - A HARD-SPHERE APPROACH[J].Chemical Engineering Science,1996(1):99-118. |
| [5] | Koch DL.;Hill RJ. .Inertial effects in suspension and porous-media flows [Review][J].Annual Review of Fluid Mechanics,2001(0):619-647. |
| [6] | R.Beetstra;M.A.van der Hoef;J.A.M.Kuipers .Drag Force of Intermediate Reynolds Number Flow Past Mono-and Bidisperse Arrays of Spheres[J].AIChE Journal,2007(2):489-501. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%