罗宝杰,华路,杜宁江,张维红,卫艳,任开宇,雷可铭,黄文光
LUO Bao-jie,HUA Lu,DU Ning-jiang,ZHANG Wei-hong,WEI Yan,REN Kai-yu,LEI Ke-ming,HUANG Wen-guang

• 1:国网四川省电力公司广元供电公司
• 2:国网陕西省电力公司培训中心
• 3:东南大学

摘要(Abstract)：

为探究非对称双吸双流道泵的内部流动规律,基于CFD性能预测方法,采用Mixture多相流模型,充分考虑汽蚀作用,计算双吸双流道泵在气固液三相联合作用下的速度-压力分布规律以及气相与固相的体积分布特点,并且考虑不同的计算方法叶轮中截面的压力分布。计算结果表明:在叶轮的头部区域存在一局部低压漩涡区,在恶劣环境工况,最终演变为汽蚀的发生。固相颗粒主要分布在靠近上下盖板的内表面,气相主要分布在叶片的头部区域。不同的计算方法,压力分布趋势基本相同,若考虑固相颗粒的作用,叶轮出口压力更高,压力梯度更大。若考虑汽蚀的作用,叶片头部的低压区范围更宽广,汽蚀现象更严重,但发生汽蚀的部位不会改变。
In order to research the internal flow law of asymmetric double-channel with double-suction pump,the paper based on CFD performance prediction method,taking Mixture multiphase flow model,fully considering the effects of cavitation,not only calculates the speed-pressure distributions as well as the volume distributions of the gas phase and the solid phase under the combined effects of the gas-solid-liquid three-phase flow,but also calculate the pressure distributions of the impeller center section by taking different methods.The results show that:the existence of a localized low-pressure vortex region in the head of the impeller,which eventually became the occurrence of cavitation.The solid phase particles mainly distributed near the inner surface of the upper and lower cover plate.The gas phase mainly distributed in the head region of the blade.Using different calculation methods,the pressure distribution tendency is basically the same.Considering the effect of solid phase particles,the outlet pressure of impeller is higher and the pressure gradient is greater.Considering the effect of cavitation,low pressure region scope of blade head is wider and the cavitation is more serious,but the site of the occurrence of cavitation is not change.

关键词(KeyWords)： 双吸双流道泵;气固液;汽蚀;固相
double-channel with double-suction pump;gas-solid-liquid;cavitation;solid phase

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 罗宝杰,华路,杜宁江,张维红,卫艳,任开宇,雷可铭,黄文光
LUO Bao-jie,HUA Lu,DU Ning-jiang,ZHANG Wei-hong,WEI Yan,REN Kai-yu,LEI Ke-ming,HUANG Wen-guang

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