赵振敏,吕利平,李俊宏,陈文,董立春,秦莉晓

• 1:重庆大学化学化工学院
• 2:长江师范学院化学化工学院
• 3:西南化工研究设计院有限公司

摘要(Abstract)：

以DFM模型(Diffusive Flux Model)为基础,建立了颗粒的质量传递方程,之后以Fluent为计算平台,结合其UDF和UDS功能,对高浓度悬浮液在直型微通道中的流动和颗粒定态平衡分布进行了CFD模拟。研究中首先模拟非布朗悬浮液在常规通道中的流动,通过与文献结果的比较验证了建立的数学模型和求解方法的正确性。然后模拟悬浮液在微通道中的流动,分析了计算模型用于微通道模拟应做的修正,确定了相关参数,并考察了颗粒浓度、粒径、悬浮液流动速度及Pe数对通道中颗粒分布的影响,特别是明确了布朗运动对悬浮液流动的影响。模拟结果表明,DFM-CFD模拟结果与实验结果具有较好的一致性,优于文献中SBM(Suspension Balance Model)-CFD的模拟结果。

关键词(KeyWords)： 悬浮液流动;微通道;颗粒迁移;CFD模拟;DFM模型

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21176270)

作者(Author): 赵振敏,吕利平,李俊宏,陈文,董立春,秦莉晓

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