| 涡轮桨搅拌槽内混合特性模拟研究 |
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| 引用本文： | 刘敏珊,张丽娜,董其伍.涡轮桨搅拌槽内混合特性模拟研究[J].工程热物理学报,2009,30(10). |
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| 作者姓名： | 刘敏珊 张丽娜 董其伍 |
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| 作者单位： | 郑州大学热能工程研究中心,河南郑州,450002 |
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| 基金项目： | 河南省杰出人才创新基金项目 |
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| 摘 要： | 本文选用多重参考系法对搅拌桨进行模拟.对桨叶倾斜角度为90°(轴流型)、60°、45°和30°时混合效果进行比较,得到45°折叶涡轮搅拌桨的单位体积混合能最低.考察不同监测点对混合效果的响应情况,发现液面监测点混合时间稍长,桨叶部分监测点混合时间最短,随着桨叶倾斜角度增大,不同监测点混合时间差别变大.
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| 关 键 词： | 涡轮桨搅拌槽 数值模拟 计算流体力学 搅拌特性 |
NUMERICAL RESEARCH OF MIXING CHARACTERISTICS IN A STIRRED TANK WITH TURBINE IMPELLERS |
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| LIU Min-Shan,ZHANG Li-Na,DONG Qi-Wu.NUMERICAL RESEARCH OF MIXING CHARACTERISTICS IN A STIRRED TANK WITH TURBINE IMPELLERS[J].Journal of Engineering Thermophysics,2009,30(10). |
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| Authors: | LIU Min-Shan ZHANG Li-Na DONG Qi-Wu |
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| Institution: | LIU Min-Shan ZHANG Li-Na DONG Qi-Wu (Thermal Energy Engineering Research Centre,Zhengzhou University,Zhengzhou 450002,China) |
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| Abstract: | 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 difierence becomes more obvious with increasing lean angles of impellers. |
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| Keywords: | turbine mixing tank numerical research CFD mixing characteristics |
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