排灌机械工程学报2025，Vol.43Issue(7)：656-662,7.DOI:10.3969/j.issn.1674-8530.23.0161
高含气率下多相混输泵内流特性
Internal flow characteristics of multiphase pumps under high gas contents
摘要
Abstract
To investigate the internal flow field of a multiphase pump under varying gas volume frac-tions(GVF),a numerical simulation was conducted using the Euler-Euler multiphase flow model on a three-stage helical axial-flow multiphase pump.The internal pressure,gas-liquid phase distribution,and entropy generation across flow components under high GVF conditions were analyzed.The results reveal that the pressure-boosting effect of the impeller decreases linearly with increasing GVF,while the relative pressure-boosting ratio of each impeller stage remains nearly constant across different GVFs.Within the pump,gas predominantly accumulates on the suction surfaces of both the impeller and guide vanes.Due to centrifugal forces and the density difference between gas and liquid phases,the liquid tends to gather toward the impeller rim,while in the guide vanes,the liquid shifts toward the hub due to its higher density,but the gas rises toward the rim owing to its lower density.Subsequently,the gas and liquid phases gradually remix uniformly due to their density differences.Entropy gene-ration analysis indicates that energy losses in the flow field increase significantly as GVF rises from 0 to 20％.For GVFs between 20％and 80％,entropy generation remains at a high level and continues to increase with higher inlet GVF.The primary source of energy loss in the flow field is attributed to se-condary flow phenomena within the impeller.关键词
混输泵/欧拉-欧拉多相流模型/高含气率/气液两相分布/熵产Key words
multiphase pump/Eulerian-Eulerian multiphase flow model/high gas content/gas-liquid two-phase/entropy generation分类
农业科技引用本文复制引用
张睿杰,耿琳琳,高一博,田中杰,张德胜..高含气率下多相混输泵内流特性[J].排灌机械工程学报,2025,43(7):656-662,7.基金项目
国家自然科学基金资助项目(U2106225) （U2106225）
