排灌机械工程学报
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排灌机械工程学报  2009, Vol. 27 Issue (5): 297-301    DOI: 10.3969/j.issn.1674—8530.2009.05.005
泵理论与技术 最新目录 | 下期目录 | 过刊浏览 | 高级检索 Previous Articles  |  Next Articles  
双流道泵内固液两相流动的数值模拟
刘厚林, 陆斌斌, 谈明高, 王勇, 王凯
(江苏大学流体机械工程技术研究中心,江苏 镇江212013)
Numerical simulation on solid-liquid two-phase flow in a double channel pump  
Liu Houlin,Lu Binbin,Tan Minggao,Wang Yong,Wang Kai
(Technical and Research Center of Fluid Machinery Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China)
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摘要 采用Mixture多相流模型,对一比转速为80的双流道泵内固液两相流动进行了叶轮蜗壳耦合数值计算,比较了不同颗粒直径、不同颗粒体积浓度和不同工况等3种因素,对该双流道泵内静压分布、绝对速度分布、固相体积浓度分布以及泵能量外特性等的影响.结果表明:颗粒直径的变化对泵的固相体积浓度分布的影响最为明显,对静压分布、速度分布及泵的外特性等的影响较小;颗粒体积浓度的变化对泵内静压、固相体积浓度分布和外特性等都有比较大的影响,对速度分布没有明显影响;工况的变化对泵内静压和速度分布的影响最大,对固相体积浓度分布影响较小.本研究还表明,该固液两相流双流道泵的性能曲线趋势,与一般清水离心泵的基本相同;在输送颗粒直径为0.075 mm左右、体积浓度为30%的固液混合物时,该泵运行性能最优.
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刘厚林
陆斌斌
谈明高
王勇
王凯
关键词双流道泵   固液两相流   数值模拟   性能预测     
Abstract: With mixture model,the solid-liquid two-phase flow in a double channel pump,with specific speed 80 was simulated.The effects of particle diameter,particle concentration and performance conditions on static pressure distribution,absolute velocity distribution,solid volume concentration distribution and energy characteristics were studied.The results indicate that the change of particle diameter has important effects on solid volume concentration distribution and little impact on static pressure distribution,absolute velocity distribution,and energy characteristics.The change of particle concentration has more effects on static pressure distribution,solid volume concentration distribution and energy characteristics,but has little impact on absolute velocity distribution.The change of performance conditions has obvious effects on static pressure distribution,absolute velocity distribution,and little impact on solid volume concentration distribution.The results also show that the trend of performace curves is the same as that of water centrifugal pump and the characteristics are the best when particle diameter is 0.075 mm and the solid volume concentration is 30%.
Key wordsdouble channel pump   solid-liquid two-phase flow   numerical simulation   performance prediction   
收稿日期: 2009-06-27; 出版日期: 2009-09-30
基金资助:

“十一五”国家科技支撑计划项目(2008BAF34B15)

通讯作者: 刘厚林(1971-),男,江苏溧水人,研究员,博导(liuhoulin@ujs.edu.cn),主要从事泵现代设计理论与方法研究.   
作者简介: 陆斌斌(1984-),男,江苏海安人,硕士(lubinbin@163.com),主要从事双流道泵数值模拟研究.
引用本文:   
刘厚林, 陆斌斌, 谈明高等. 双流道泵内固液两相流动的数值模拟[J]. 排灌机械工程学报, 2009, 27(5): 297-301.
LIU Hou-Lin, Lu-Bin-Bin, Tan-Ming-Gao et al. Numerical simulation on solid-liquid two-phase flow in a double channel pump  [J]. Journal of Drainage and Irrigation Machinery Engin, 2009, 27(5): 297-301.
 
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