几种翼型涡流发生器对CaCO3污垢特性影响的数值模拟

doi:10.3969/j.issn.0438-1157.2013.07.022

化工学报 ›› 2013, Vol. 64 ›› Issue (7): 2468-2473.DOI: 10.3969/j.issn.0438-1157.2013.07.022

• 催化、动力学与反应器 • 上一篇下一篇

几种翼型涡流发生器对CaCO₃污垢特性影响的数值模拟

徐志明¹, 刘坐东², 张一龙², 王宇朋¹, 张仲彬¹

1. 东北电力大学能源与动力工程学院, 吉林省吉林市 132012;
2. 华北电力大学能源动力与机械工程学院, 北京 102206

收稿日期:2012-11-15 修回日期:2013-03-01 出版日期:2013-07-05 发布日期:2013-07-05
通讯作者: 刘坐东
作者简介:徐志明(1959- ),男,博士,教授。
基金资助:
国家自然科学基金项目(51076025)。

Numerical simulation about influence of several kinds of winglet vortex generator structures on CaCO₃ fouling characteristics

XU Zhiming¹, LIU Zuodong², ZHANG Yilong², WANG Yupeng¹, ZHANG Zhongbin¹

1. School of Energy and Power Engineering, Northeast Dianli University, Jilin 132012, Jilin, China;
2. School of Energy and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

Received:2012-11-15 Revised:2013-03-01 Online:2013-07-05 Published:2013-07-05
Supported by:
supported by the National Natural Science Foundation of China(51076025).

摘要/Abstract

摘要： 为研究翼型涡流发生器结构以及布置对换热面污垢的影响,对矩形通道内布置翼型涡流发生器后壁面CaCO₃析晶污垢的沉积进行了模拟。计算并分析了在温度为50℃,流速为0.2 m·s^-1,浓度为1000 mg·L^-1的CaCO₃过饱和溶液下,翼形涡流发生器的翼型、攻角和纵向间距等几何因素对表面污垢沉积的影响。结果表明:表面单位面积结垢量随着翼型涡流发生器攻角的增大而减小,随着涡流发生器列间距的增大而增大,当间距为60 mm时达到最大,超过60 mm后表面单位面积结垢量呈现下降趋势。

关键词: 翼型涡流发生器, 间距和攻角, CaCO₃析晶污垢, 数值模拟

Abstract: For the purpose of studying the impact of vortex generator structure and arrangement on fouling of heat exchange surface,CaCO₃ crystallization fouling deposition was simulated and the inside of rectangular channel was decorated with wing type vortex generator.Under the condition of temperature 50 centigrade,velocity 0.2 m·s^-1 and CaCO₃ concentration about 1000 mg·L^-1,the influence of geometrical factors was calculated and analyzed,such as winglet type,attack angle and lengthways distance on surface fouling deposition.The results showed that,at the specific temperature and velocity,surface unit area fouling decreased with increasing angle of attack of the wing vortex generator,and increased with increasing arrangement distance of vortex generator.The fouling on the surface reached a maximum when the distance was 60 mm,and then declined beyond 60 mm.

Key words: winglet vortex generator, spacing and angle of attack, CaCO₃ crystallization fouling, numerical simulation

中图分类号:

TK124

徐志明, 刘坐东, 张一龙, 王宇朋, 张仲彬. 几种翼型涡流发生器对CaCO₃污垢特性影响的数值模拟[J]. 化工学报, 2013, 64(7): 2468-2473.

XU Zhiming, LIU Zuodong, ZHANG Yilong, WANG Yupeng, ZHANG Zhongbin. Numerical simulation about influence of several kinds of winglet vortex generator structures on CaCO₃ fouling characteristics[J]. CIESC Journal, 2013, 64(7): 2468-2473.

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几种翼型涡流发生器对CaCO₃污垢特性影响的数值模拟

Numerical simulation about influence of several kinds of winglet vortex generator structures on CaCO₃ fouling characteristics

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