排灌机械工程学报2016，Vol.34Issue(12)：1022-1027,6.DOI:10.3969/j.issn.1674-8530.16.0037
射流泵全特性工况的数值分析及试验研究
Numerical analysis and experiment of jet-pump in conditions of complete characteristic
摘要
Abstract
To investigate the performance and inner flow pattern of jet-pump in conditions of complete characteristic,this paper presents an experimental and numerical research on jet-pump.The results re-veal that the outlet static pressure of numerical model has a nearly negative linear relationship with the flow ratio,the numerical simulation method based on Realizable k-εturbulent model predicted the non-dimensional performance precisely compared with the experimental data,and the pressure ratio al-so has a nearly negative linear relationship with the flow ratio.Under the positive pressure ratio and flow ratio status,the relative errors between numerical model and experiment increase with the growth of flow ratio,the maximum error is about 0.26;under the positive pressure ratio and negative flow ratio status,the relative errors are small and stable,the minimum error is about 0.02.Around the best effi-ciency work condition,the velocity vector distributions of suction chamber are relatively uniform,the local vortex appears in suction chamber obviously when the flow ratio decreased.The numerical results reveal that the axial velocity uniformities of the throat chamber inlet section are obviously higher than those of other sections afterwards,the axial velocity uniformities of the middle section and afterwards in throat chamber are relatively even,and the momentum exchange process is almost complete before the middle section in the throat chamber.关键词
射流泵/全特性/流速分布/计算流体动力学Key words
jet-pump/complete characteristic/velocity distribution/computational fluid dynamics分类
农业科技引用本文复制引用
欧鸣雄,贾卫东,邱白晶,管贤平..射流泵全特性工况的数值分析及试验研究[J].排灌机械工程学报,2016,34(12):1022-1027,6.基金项目
国家自然科学基金资助项目（51475215）；现代农业装备与技术协同创新中心项目（NZXT01201403）；中国博士后科学基金资助项目 （）
