NUMERICAL RESEARCH OF MIXING CHARACTERISTICS IN A STIRRED TANK WITH TURBINE IMPELLERS
NUMERICAL RESEARCH OF MIXING CHARACTERISTICS IN A STIRRED TANK WITH TURBINE IMPELLERS
复制标题
涡轮叶轮搅拌槽内混合特性的数值研究
DOI：
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发表时间：
2009
影响因子：
2.4
通讯作者：
Liu Min
中科院分区：
文献类型：
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作者：
Liu Min
本文采用多参考系（MRF）对搅拌桨进行了数值模拟，比较了叶片倾角为90°（轴流式）、60 °、45 °和30°的搅拌桨的混合效果。结果表明，在搅拌槽中，45°斜叶涡轮搅拌桨的单位体积混合能最低，并考察了不同观测点对搅拌桨混合效果的响应，结果表明，在搅拌桨表面观测的混合时间比在搅拌桨附近观测的混合时间长，且随着搅拌桨倾斜角的增大，这种差异更加明显。
In the paper,multi-reference frame(MRF) is used to simulate impellers.The mixing effects of agitators with blades of lean angle of 90°(axial flow type),60°,45°and 30°are compared. The results show that the mixing energy per unit volume in the 45°pitched blade turbines impellers in the tank is lowest.The respondences of different observation points to mixing effects of these kinds of impellers are investigated.The results indicate that the mixing time of observation on the surface is longer than that of the observation near the impellers,and the difference becomes more obvious with increasing lean angles of impellers.