徐子龙,孙宁,杨潮,刘宝庆,金志江

• 1:浙江大学化工机械研究所

摘要(Abstract)：

基于颗粒动力学理论对稠密固-液搅拌釜进行模拟,探究固相分布、固相悬浮高度及沉积高度随转速的变化规律。结果表明,采用颗粒动力学理论(KTGF)模型能够较好地预测稠密固-液混合状态。在较低的转速下,釜底的固相浓度较高,桨叶下方、釜壁与釜底的连接处易形成固相的沉积,且搅拌釜上方会出现清液区域。随着转速的增加,固相在轴向分布逐渐均匀,固相沉积区域及固相悬浮高度分别缩小和升高。但是,当转速达到一定程度后,固相均匀度及固相悬浮高度的改善不明显。此外,将固相均匀度法、固相沉积高度法及固相悬浮高度法预测的临界离底悬浮转速与实验数据进行比较,模拟值分别低于、高于和低于实验值。

关键词(KeyWords)： 搅拌釜;颗粒动力学理论;稠密固-液两相流;计算流体力学

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21978255,21776246);; 中央高校基本科研业务费项目(2019QNA4020)

作者(Author): 徐子龙,孙宁,杨潮,刘宝庆,金志江

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