杨锋苓,周慎杰,王贵超

• 1:山东大学机械工程学院
• 2:山东大学能源与动力工程学院动力工程及工程热物理博士后流动站

摘要(Abstract)：

为研究偏心搅拌槽内的宏观不稳定性,基于分离涡模型建立了偏心搅拌数值模拟方法。采用滑移网格法模拟搅拌桨的旋转,实现了偏心搅拌流场的非稳态模拟。对不同工况时的宏观不稳定性进行了频谱分析,讨论了偏心率、雷诺数和桨径比对宏观不稳定频率的影响,并进行了PIV实验验证。研究表明,偏心搅拌槽内存在明显的宏观不稳定现象,其变化周期约为桨叶通过周期的10倍;PIV实验结果与分离涡模拟结果吻合较好,都表明偏心搅拌槽内的宏观不稳定频率随雷诺数的升高而增大,随偏心率的增大而减小,随桨径比的增大而增大。

关键词(KeyWords)： 偏心搅拌;宏观不稳定性;分离涡模拟;计算流体动力学;粒子图像测速仪

Abstract:

Keywords:

基金项目(Foundation): 山东大学自主创新基金(2010GN052);; 山东省科技攻关项目基金(2009GG10007019)

作者(Author): 杨锋苓,周慎杰,王贵超

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