半圆管挡板搅拌槽内的湍流流场

doi:10.6040/j.issn.1672-3961.0.2014.258

山东大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (1): 76-81.doi: 10.6040/j.issn.1672-3961.0.2014.258

半圆管挡板搅拌槽内的湍流流场

张翠勋¹, 杨锋苓^2,3, 连继咏⁴

1. 山东天力干燥股份有限公司, 山东济南 250014;
2. 山东大学机械工程学院, 山东济南 250061;
3. 高效洁净机械制造教育部重点实验室(山东大学), 山东济南 250061;
4. 大众报业集团, 山东济南 250014

收稿日期:2014-09-15 修回日期:2014-11-26 发布日期:2014-09-15
通讯作者: 杨锋苓(1979-),男,山东莒南人,讲师,博士,主要研究方向为流体搅拌混合.E-mail:fly@sdu.edu.cn E-mail:fly@sdu.edu.cn
作者简介:张翠勋(1984-),女,山东茌平人,工程师,硕士,主要研究方向为流体搅拌混合及过程设备设计.E-mail:zhangcx1208@163.com
基金资助:
国家自然科学基金资助项目(21306105)

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

ZHANG Cuixun¹, YANG Fengling^2,3, LIAN Jiyong⁴

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

摘要/Abstract

摘要： 为增强搅拌槽内流体的流动特性,设计一种半圆管形挡板,采用标准k-ε模型和多重参考系法对其内部湍流流场进行研究。通过与实验结果的比较,验证了所建模型和模拟方法的可靠性,随后对搅拌槽内的流场、速度和湍动能分布及功率消耗进行分析,并与标准搅拌槽进行对比。结果表明,半圆管挡板能提高流体速度分布的均匀程度,增大流体的轴向和切向速度以及湍动能,而且功率消耗略降低约5%,具有一定的节能功效。

关键词: 半圆管挡板, 计算流体动力学, 搅拌槽, 湍流, 流场

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

中图分类号:

TQ027

张翠勋, 杨锋苓, 连继咏. 半圆管挡板搅拌槽内的湍流流场[J]. 山东大学学报(工学版), 2015, 45(1): 76-81.

ZHANG Cuixun, YANG Fengling, LIAN Jiyong. Turbulent flow in a stirred tank equipped with half-circle-tube baffles[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2015, 45(1): 76-81.

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半圆管挡板搅拌槽内的湍流流场

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

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