|本期目录/Table of Contents|

[1]舒安庆,王 敏,魏化中,等.直斜错位桨搅拌槽内流场的探究[J].武汉工程大学学报,2015,37(01):44-48.[doi:10. 3969/j. issn. 1674-2869. 2015. 01. 010]
 SHU An-qing,WANG Min,WEI Hua-zhong,et al.Flow field in stirred tankof straight-gradient dislocated agitator[J].Journal of Wuhan Institute of Technology,2015,37(01):44-48.[doi:10. 3969/j. issn. 1674-2869. 2015. 01. 010]
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直斜错位桨搅拌槽内流场的探究(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
37
期数:
2015年01期
页码:
44-48
栏目:
机电与信息工程
出版日期:
2015-01-31

文章信息/Info

Title:
Flow field in stirred tankof straight-gradient dislocated agitator
文章编号:
1674-2869(2015)01-0044-05
作者:
舒安庆王 敏 魏化中刘 康
武汉工程大学机电工程学院,湖北 武汉 430205
Author(s):
 SHU An-qing WANG MinWEI Hua-zhong LIU Kang
 SchoolofMechanical& electrical Engineering, Wuhan Institute of Technology,Wuhan430205,China  
关键词:
直斜错位搅拌桨桨叶间距FLUENT流场优化
Keywords:
straight-gradientdislocated agitator span
分类号:
TH137
DOI:
10. 3969/j. issn. 1674-2869. 2015. 01. 010
文献标志码:
A
摘要:
为了进一步增强直斜错位搅拌桨的搅拌效果. 对桨叶直径D=160 mm,不同桨叶间距的搅拌桨进行三维数值模拟,通过分析它们的宏观流场特征,综合速度、轴向速度、径向速度、切向速度的变化规律及死区分布规律,探究直斜错位桨的最优桨叶间距. 结果表明:当桨叶间距在3D/4-3D/4范围内,各速度分布的不均匀性较小,搅拌槽中基本无死区且流体的循环范围最广. 当桨叶间距在D/2-D范围内,高速区范围最大,且无明显变化. 当桨叶间距在3D/4-D范围内,流体的平均速率较大,当桨叶间距为3D/4时,轴向速度和径向速度较大,故搅拌效果较佳,混合效率较高. 因此,桨叶间距在3D/4-7D/8范围内可取最佳值.
Abstract:
To improve thestirringperformance, the fluid flow in stirred tank withdifferent agitators was numerically simulated by FLUENT as agitators diameter is 600 mm. The optimal span of the agitator was explored by analyzingthe characteristic of flow field, the distribution of velocity, axial velocity,radial velocity, tangential velocity and dead-zone volume. The researchindicates that the larger area of fluid circulation and the more uniformvelocity distribution appear in stirred tank, and dead-zone largely disappears whenthe span of blades is between 3D/4 and 7D/8; the large-scale regional speedy fluid is observed and itdoes not change obviously when the span is between D/2 and D; the fluid moves with the larger average velocity in stirredtank when the span is between 3D/4 and D;the better mixtureperformance and higher stirred efficiency can be obtained due to the largeraxial velocity and radial velocity when the span is 3D/4. Therefore, the optimal span of blades can be obtained in thescope of 3D/4 to 7D/8.

参考文献/References:

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备注/Memo

备注/Memo:
 收稿日期:2014-09-12  作者简介:舒安庆(1964-),男,浙江宁波人,教授,硕士.研究方向:压力容器压力管道、流体机械和搅拌   设备的研究开发、新型高效过程装备及仿真技术.
更新日期/Last Update: 2015-03-21