| 静态混合器流体力学性能的CFD模拟 |
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| 引用本文： | 刘春江,陆寒冰,刘辉,袁希钢.静态混合器流体力学性能的CFD模拟[J].天津大学学报(自然科学与工程技术版),2007,40(6):677-682. |
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| 作者姓名： | 刘春江 陆寒冰 刘辉 袁希钢 |
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| 作者单位： | 天津大学化学工程联合国家重点实验室 天津300072 |
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| 摘 要： | 针对立交盘静态混合器的流体力学性能,采用计算流体力学方法对混合器内牛顿流体的流动状况进行了研究,得到了流体流经2个混合元件的流场变化和压降情况.所选的6个截面的速度分布复杂多变,显示出与混合器结构相对应的周期性.采用激光多普勒测速仪测定了轴向速度的实验数据与模拟结果吻合较好.对于压降的模拟在装有10个立交盘静态混合器的管路中进行,研究发现50＜Re＜500为所研究系统的流动状态从层流向湍流转变的临界区间.
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| 关 键 词： | 立交盘静态混合器 流场 压降 计算流体力学 激光多普勒测速仪 |
| 文章编号： | 0493-2137（2007）06-0677-06 |
| 修稿时间： | 2006-10-19 |
Computational Fluid Dynamic Simulation of the Hydrodynamics Characteristic in a Static Mixer |
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| LIU Chun-jiang,LU Han-bing,LIU Hui,YUAN Xi-gang.Computational Fluid Dynamic Simulation of the Hydrodynamics Characteristic in a Static Mixer[J].Journal of Tianjin University(Science and Technology),2007,40(6):677-682. |
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| Authors: | LIU Chun-jiang LU Han-bing LIU Hui YUAN Xi-gang |
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| Institution: | State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | To investigate the hydrodynamics characteristic in a static mixer-cross over disc(COD),the flow field and pressure drop were obtained numerically via computational fluid dynamics(CFD) for Newtonian fluid.Calculated results showed that the velocity distributions change with six sections in the tube containing two mi-xers and indicated a spatially periodic flow which matches the periodicity of the mixer geometry.The experimental data obtained by laser Doppler anemometry(LDA) and the numerical predictions were in good agreement.The calculated pressure drop in a tube containing ten COD static mixers had been obtained.It is concluded that the critical zone for changing from laminar to turbulent flow was 50
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| Keywords: | cross over disc static mixer flow field pressure drop computational fluid dynamics laser Doppler anemometer |
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