水利学报2017，Vol.48Issue(9)：1126-1133,8.DOI:10.13243/j.cnki.slxb.20160893
直导叶几何参数对双向泵内流场及水力性能的影响
Influence of geometrical parameters of straight guide vane on the flow field and hydraulic performance of bidirectional pump
摘要
Abstract
Due to convenient manufacture,straight guide vane has been widely used in axial-flow impeller machinery.With the purpose of study on the flow characteristics of the straight guide vane and its design method,a high specific speed bidirectional axial flow pump was chosen as the research object.Based on all structured grid,the SST k-ω turbulence model was used to analyze the mechanism of flow loss and the influence of straight guide vane's geometric parameters on external characteristic and internal flow field.Then design method of straight guide vane was summarized.The results show that the flow separation region expands and a large-scale backflow appears when the chord length and vane number of straight guide vane increase,the reduction of axial spacing between the guide vane and blade will increase incidence angle of vane inlet,and then increase the separation strength.Therefore,the chord length and vane number should be decreased as far as possible,and the axial spacing should be increased appropriately under the condition of allowed structure strength.The results can provide some reference for the design of straight guide vane used in the machine with axial-flow blades.关键词
轴流泵/导叶/数值模拟/流动分离Key words
axial-flow pump/guide vane/numerical simulation/flow separation分类
机械制造引用本文复制引用
马鹏飞,王军..直导叶几何参数对双向泵内流场及水力性能的影响[J].水利学报,2017,48(9):1126-1133,8.基金项目
上海市宝山区产学研项目(CXY2012-12) （CXY2012-12）
