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.

参考文献

[1] LAMBERTO D J, MUZZIO F J, SWANSON P D, et al. Using time-dependent RPM to enhance mixing in stirred vessels[J]. Chemical Engineering Science, 1996, 51(5):733-741.
[2] FOUNTAIN G O, KHAKHAR D V, OTTINO J M. Visualization of three-dimensional chaos[J]. Science, 1998, 281:683-686.
[3] ALVAREZ M M, SHINBROT T, ZALC J, et al. Practical chaotic mixing[J]. Chemical Engineering Science, 2002, 57(17):3749-3753.
[4] 丁绪淮,周理. 液体搅拌[M]. 北京:化学工业出版社, 1983.
[5] 永田进治. 混合原理与应用[M]. 马继舜译.北京:化学工业出版社, 1984.
[6] STREK F, KARCZ J. Experimental studies of power consumption for agitated vessels equipped with non-standard baffles and high-speed agitator[J]. Chemical Engineering and Processing:Process Intensification, 1993, 32(6):349-357.
[7] KARCZ J, STREK F. Heat transfer in jacketed agitated vessels equipped with non-standard baffles[J]. Chemical Engineering Journal, 1995, 58(2):135-143.
[8] 戴干策, 陈剑佩, 张家庭, 等. 具有槽缝挡板的搅拌反应器:中国, 02265664.2[P]. 2002-07-22. DAI Gance, CHEN Jianpei, ZHANG Jiating, et al. Mechanically agitated reactor with slot baffles:China, 02265664.2[P]. 2002-07-22.
[9] SIVASHANMUGAM P, SANDEEP P. Experimental studies and CFD modeling on the effects of a cut in the baffle on power consumption[J]. Chemical Product and Process Modeling, 2009, 4(1):75.
[10] 杨锋苓, 周慎杰, 王贵超, 等. 非标准挡板搅拌槽内湍流流场的数值模拟[J]. 高校化学工程学报, 2012, 26(6):952-958. YANG Fengling, ZHOU Shenjie, WANG Guichao, et al. Study on the hydrodynamics of a stirred tank equipped with non-standard baffles[J]. Journal of Chemical Engineering of Chinese Universities, 2012, 26(6):952-958.
[11] 王星星, 刘志炎, 龙伟民, 等. 椭圆底封头十字形挡板搅拌釜内流畅研究[J]. 机械工程学报, 2014, 50(6):156-164. WANG Xingxing, LIU Zhiyan, LONG Weimin, et al. Research on flow field in elliptic bottom stirred tank with cruciform baffles[J]. Journal of Mechanical Engineering, 2014, 50(6):156-164.
[12] MURTHY B N, JOSHI J B. Assessment of standard k-ε, RSM and LES turbulence models in a baffled stirred vessel agitated by various impeller designs[J]. Chemical Engineering Science, 2008, 63(22):5468-5495.
[13] SINGH H, FLETCHER D F, NIJDAM J J. An assessment of different turbulence models for predicting flow in a baffled tank stirred with a Rushton turbine[J]. Chemical Engineering Science, 2011, 66(23):5976-5988.
[14] WU H, PATTERSON G K. Laser-Doppler measurements of turbulent-flow parameters in a stirred mixer[J]. Chemical Engineering Science, 1989, 44(10):2207-2221.
[15] RUTHERFORD K, MAHMOUDI S M S, LEE K C, et al. The influence of Rusthon impeller blade and disk thickness on the mixing characteristics of stirred vessels[J]. Chemical Engineering Research and Design, 1996, 74(3):369-378.
[16] DELAFOSSE A, LIN A, MORCHAIN J, et al. LES and URANS simulations of hydrodynamics in mixing tank:comparison to PIV experiments[J]. Chemical Engineering Research and Design, 2008, 86(12):1322-1330.

多维度评价

Viewed

Full text

Abstract

Cited

Shared

Discussed

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

PDF (PC)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 10

多维度评价

本文评价

推荐阅读 10

[1]	闫睿一,董震,鲁森,赖艳华,吕明新. 通风柜下侧挡板和导流板对流场的影响分析[J]. 山东大学学报 (工学版), 2021, 51(5): 122-130.
[2]	曹洪振,祁金胜,袁宝强,杜文静,王湛. 偏心方圆节扩散管数值模拟[J]. 山东大学学报 (工学版), 2020, 50(5): 77-82.
[3]	祁金胜, 曹洪振, 石岩, 杜文静, 王湛. 虾米腰弯管内置导流板优化[J]. 山东大学学报 (工学版), 2020, 50(5): 64-69.
[4]	刘欣,杨锋苓. 柔性Rushton桨的振动特性[J]. 山东大学学报 (工学版), 2020, 50(5): 50-55.
[5]	李美婷, 李威, 李晓光, 杨锋苓. 偏心轴搅拌槽内的层流流场特性[J]. 山东大学学报 (工学版), 2019, 49(4): 93-98.
[6]	宋凯明1,于健2,丁冬升1,初少玲3,周玉强4. 基于VOF方法的赛艇艇型优化[J]. 山东大学学报(工学版), 2012, 42(4): 67-73.
[7]	张永超陈庆光王维斌展金玲刘少荷. 对旋风机非定常湍流计算及整机压力脉动分析[J]. 山东大学学报(工学版), 2008, 38(6): 7-10.
[8]	杨锋苓,周慎杰,张翠勋 . 摆动式搅拌槽内宏观流场的数值模拟[J]. 山东大学学报(工学版), 2008, 38(5): 46-49 .
[9]	张欣,李术才,李树忱 . 考虑天然渗流场影响的地应力场反演回归分析及应用[J]. 山东大学学报(工学版), 2008, 38(4): 57-62 .
[10]	栾志坚,张冠敏,张俊龙,潘继红 . 波纹几何参数对人字形板式换热器内流动形态的影响机理[J]. 山东大学学报(工学版), 2007, 37(2): 34-37 .