JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2015, Vol. 45 ›› Issue (1): 76-81.doi: 10.6040/j.issn.1672-3961.0.2014.258

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Turbulent flow in a stirred tank equipped with half-circle-tube baffles

ZHANG Cuixun1, YANG Fengling2,3, LIAN Jiyong4   

  1. 1. Shandong Tianli Drying Equipment Co., Ltd, Jinan 250014, Shandong, China;
    2. School of Mechanical Engineering, Shandong University, Jinan 250061, Shandong, China;
    3. Key Lab of High-efficiency and Clean Mechanical Manufacture (Shandong University), Ministry of Education, Jinan 250061, Shandong, China;
    4. Dazhong News Group, Jinan 250014, Shandong, China
  • Received:2014-09-15 Revised:2014-11-26 Published:2014-09-15

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Abstract: For the purpose of improving the hydrodynamics in stirred tanks, a half-circle-tube baffle stirred tank was developed and the turbulent flow characteristics in it were studied using the standard k-ε model and the multiple reference frame (MRF) method. The modeling and simulation method were validated by comparisons with the experimental results from the reported literature. Subsequently, the flow fields, velocity and turbulent kinetic energy distributions, and power consumption were analyzed and compared with their counterparts in the standard stirred tank. The results showed that the new configuration developed here has the advantage of enhancing the uniformity of fluid velocity distribution, improving the axial and tangential velocity, as well as the turbulent kinetic energy. Besides, the power consumption can be reduced about 5%, which has the advantage of energy saving.

Key words: half-circle-tube baffle, computational fluid dynamics, stirred tank, turbulence, flow field

CLC Number: 

  • TQ027
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