排灌机械工程学报2024，Vol.42Issue(2)：133-138,146,7.DOI:10.3969/j.issn.1674-8530.22.0191
黏度对油气混输泵内气相和泄漏涡分布的影响
Effect of viscosity on gas phase and leakage vortex distribution in oil-gas mixed pump
摘要
Abstract
In order to more accurately investigate the characteristics of these vortices,such as leakage vortices and separation vortices,in the flow path of oil and gas mixing pumps when transporting media under high viscosity conditions,the Euler-Eulerian nonlinearity model of homogeneous flow was used to analyze the gas phase distribution and vortex distribution in the oil-gas mixed pump,and rigid rota-ting vorticity was used to characterize the vortex intensity.The results show that the existence of the gas phase greatly affects the distribution of streamlines on the blade surface in the impeller channel of a multiphase pump.Under partial design conditions,the gas phase is mainly concentrated in the latter half of the pressure surface when the viscosity is small,and the gas phase is less distributed in the lat-ter part of the pressure surface when the viscosity is large.The distribution of the leakage vortex under different working conditions is in good agreement with the gas phase distribution.Under the partial de-sign condition,the aggregation degree of the gas phase at the tail of the flow channel is proportional to the viscosity,but the local gas phase aggregation in the flow channel is improved under the large flow condition.In addition,due to the low turbulent viscosity and more shear vortices in the flow channel un-der high viscosity conditions,the vorticity distribution is more accurate when considering rigid rotation.The research results can serve as a theoretical reference for the optimal design of oil-gas mixed pumps.关键词
油气混输泵/黏性/涡流/刚性旋转涡量/气相聚集Key words
oil-gas mixed pump/viscosity/vortex/vorticity of rigid rotation/gas phase aggregation分类
农业科技引用本文复制引用
孙国栋,史广泰,文海罡,黄宗柳..黏度对油气混输泵内气相和泄漏涡分布的影响[J].排灌机械工程学报,2024,42(2):133-138,146,7.基金项目
中央引导地方科技发展资金面上项目(2021ZYD0038) （2021ZYD0038）
国家重点研发计划项目(2018YFB0905200) （2018YFB0905200）
清华大学水沙科学与水利工程国家重点实验室开放基金项目(sklhse-2021-E-03) （sklhse-2021-E-03）
