【作者】 郑小波； 张开辉； 郭鹏程； 孙帅辉； 汪昭鹏；

【Author】 ZHENG Xiao-bo;ZHANG Kai-hui;GUO Peng-cheng;SUN Shuai-hui;WANG Zhao-peng;State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi’an University of Technology;

【机构】 西安理工大学西北旱区生态水利国家重点实验室；

【摘要】 为了探究气液条件下的混输泵在运行过程中的内部流动特性,本研究以额定转速为3500r/min的新型离心混输泵作为研究对象,考虑表面张力等因素,采用Eulerian-Eulerian模型作为两相流模型,液相采用SST k-ω湍流模型,气相采用分散相零方程模型对不同进口含气率时的单级混输泵和三级混输泵进行数值计算。结果表明:混输泵三级运行时,首级泵对比单级泵做功能力有所提高;三级泵运行过程中第二、三级泵对首级泵做功,相反首级泵对二、三级泵做负功;含气率越大做功越大。更多还原

【Abstract】 In order to explore the internal flow characteristics of the mixed pump under gas-liquid conditions during operation,a new centrifugal mixing pump with a rated speed of3500 r/min was used as the research object.Considering the surface tension and other factors,the Eulerian-Eulerian model was used as two.In the phase flow model,the liquid phase adopts the SST k-co turbulence model,and the gas phase uses the dispersive phase zero equation model to numerically calculate the single-stage mixed pump and the three-stage mixed pump at different inlet gas contents.The results show that the performance of the first-stage pump is improved compared with the single-stage pump when the mixed-stage pump is operated in three stages.The second-and third-stage pumps work on the first-stage pump during the operation of the third-stage pump,and the first-stage pump is opposite.The tertiary pump performs negative work;the greater the gas content,the greater the work.更多还原