交错叶轮双吸离心泵空化特性研究

发布时间：2018-02-01 13:46

本文关键词： 离心泵交错叶轮空化数值模拟　出处：《灌溉排水学报》2017年06期 　论文类型：期刊论文

【摘要】：为了探究交错叶轮双吸离心泵的空化性能,结合Rayleigh-Plesset空化模型和RNGk-ε湍流模型,对一叶轮两侧叶片进行交错布置结构的双吸离心泵内部空化流动进行了数值模拟,分析了空化对泵内压强分布的影响,绘制了空化特性曲线,并分析了不同工况下叶轮所受径向力,同时研究了空化对叶轮叶片空泡体积分数及泵内湍动能分布的影响。结果表明,交错叶轮双吸离心泵空化特性同常规离心泵空化特性具有一致性,空化对叶轮所受径向力大小以及湍动能分布都有较大影响。
[Abstract]:In order to investigate the cavitation performance of staggered impeller double suction centrifugal pump, Rayleigh-Plesset cavitation model and RNGk- 蔚 turbulence model are combined. The cavitation flow in a double suction centrifugal pump with interlaced blades on both sides of an impeller is simulated numerically. The influence of cavitation on the pressure distribution in the pump is analyzed and the cavitation characteristic curve is drawn. At the same time, the influence of cavitation on the volume fraction of cavitation and the distribution of turbulent kinetic energy in the impeller blade is studied. The cavitation characteristics of staggered impeller double suction centrifugal pump are consistent with those of conventional centrifugal pump. Cavitation has great influence on the radial force and turbulent kinetic energy distribution of impeller.
【作者单位】：西华大学能源与动力工程学院;
【基金】：国家自然科学基金项目(51279172) 西华大学省部级学科平台开放课题(szjj2016-004) 流体及动力机械四川省科研创新研究团队(x1404)
【分类号】：TH311
【正文快照】： 邱胜,刘小兵,白利,等.交错叶轮双吸离心泵空化特性研究[J].灌溉排水学报,2017,36(6):63-68.0引言双吸离心泵具有扬程高、流量大的特点,在水利灌溉、城市及工业用水等方面有着十分广泛的应用。事实上,当双吸离心泵在设计工况或大流量工况运行且对扬程要求不高时,交错叶轮双吸泵

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