| 棒式文丘里除尘器气液两相流阻力特性 |
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| 作者姓名： | 夏毅敏 杨端 胡承欢 唐浦华 卜英勇 |
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| 作者单位： | 中南大学机电工程学院,长沙,410083;中南大学机电工程学院,长沙410083;长沙学院机电工程系, 长沙410003 |
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| 基金项目： | 国家高技术研究发展计划资助项目（2012AA041801）；国家重点研发计划资助项目（2016YFC0209300）；中南大学中央高校基本科研业务费专项资金资助项目（2016zzts292） |
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| 摘 要： | 为了掌握棒式文丘里除尘器内气液两相流的阻力特性，基于多相流理论，建立其三维CFD模型，研究分析棒间距、除尘风量和液气比对棒式文丘里除尘器阻力特性的影响，并建立了阻力预测公式以及三者之间的关系式.结果表明:文丘里棒层与下筒体的压力损失随着棒间距的减小和风量的增大呈幂指数关系增大，随着液气比的增大呈近线性增大；上筒体的压力损失与风量呈近平方关系；通过与实验数据对比，关系式最大误差为16.88%，验证了其有效性.
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| 关 键 词： | 棒式文丘里 阻力特性 两相流 数值模拟 |
| 收稿时间： | 2016-06-02 |
Resistance characteristics of gas-liquid two-phase flow in stick venturi scrubbers |
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| Affiliation: | 1) School of Mechanical and Electrical Engineering, Central South University, Changsha 410082, China2) School of Mechanical and Electrical Engineering, Changsha University, Changsha 410082, China |
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| Abstract: | In order to grasp the resistance characteristics of gas-liquid two-phase flow in stick venturi scrubbers, based on the multiphase flow theory, a three-dimensional CFD model was established. The impacts of stick spacing, air flow and liquid-gas ratio on the pressure loss were studied, and a resistance characteristic model was established. The relationship among stick spacing, air flow and liquid-gas ratio was obtained based on the resistance characteristic model. The results show that the pressure loss between the venturi bar layer and the lower cylinder increases in power exponent with the decrease of stick spacing and the increase of air flow, and it increases in linear with the increase of liquid-gas ratio. The pressure loss of the upper cylinder increases in quadratic with the increase of air flow. The max error between the resistance characteristic model and experimental data is 16. 88%, which verifies the model effectiveness. |
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