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Chemcial Industry and Engineering 2023, Vol. 40 Issue (2) :123-132    DOI: 10.13353/j.issn.1004.9533.20210328
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Comparison and analysis of stirring performance stirred by disc turbine agitators
WANG Yinghui1, HAO Lin1, ZHU Zhenxing2, WEI Hongyuan1
1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
2. Research Institute of Petroleum Processing, China Petroleum and Chemical Corporation, Beijing 100083, China

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Abstract Four geometries of disc turbine agitators were established in the oval-bottom stirred vessel according to industry standards. Standard k-ε turbulence model and multi-reference frame (MRF) method were used to study the influence of blade shape, speed, rotation direction and flow pattern on power, discharge flow, pumping efficiency and shear rate. The results show that blade shape has an impact on the power consumption, discharge flow, pumping efficiency and critical installation height of flow pattern transition. The pumping efficiency meets arc blade (reverse)>curved blade (positive)>arrow blade (reverse)>circular blade (positive)>straight blade>arrow blade (positive)>arrow blade (reverse) when the flow pattern is radial. With the flow pattern transiting from radial flow to axial flow, power and radial discharge flow are reduced. The performance analysis of standard agitators provides a reference for the selection and design of industrial agitators.
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WANG Yinghui
HAO Lin
ZHU Zhenxing
WEI Hongyuan
Keywordsdisc turbine agitator   computational fluid dynamics   blade shape   power consumption   pumping efficiency     
Received 2021-03-28;
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WANG Yinghui, HAO Lin, ZHU Zhenxing, WEI Hongyuan.Comparison and analysis of stirring performance stirred by disc turbine agitators[J]  Chemcial Industry and Engineering, 2023,V40(2): 123-132
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