南通大学学报（自然科学版）2024，Vol.23Issue(3)：59-65,81,8.DOI:10.12194/j.ntu.20231107001
叶轮叶片高度对旋涡泵水力性能的影响
Effect of impeller blade height on hydraulic performance of vortex pump
摘要
Abstract
To thoroughly investigate the fluid flow mechanism within vortex pumps and understand the impact of impeller blade height variations on pump performance,flow rate-head characteristic curves of a closed impeller,opened channel vortex pump were experimentally measured at different impeller blade heights.Numerical simulations of the vortex pump were conducted using the k-ε turbulence model and unstructured mesh.Internal flow field analysis was performed using ANSYS CFX post-processing to study the influence of impeller blade height changes on the external characteristics of the vortex pump.Results show that the simulation outcomes closely align with experimental data trends,demonstrating high reliability of the numerical simulation method.Under identical flow rate conditions,as the impeller blade height decreases,the longitudinal vortex intensity within the pump gradually weakens,and the number of vortex cores in the impeller channel reduces,leading to a progressive decline in pump head and efficiency.These findings provide a reference basis for subsequent optimization design of vortex pumps.关键词
旋涡泵/闭式叶轮/开式流道/数值模拟/外特性Key words
vortex pump/closed impeller/opened runner/numerical simulation/external characteristics分类
机械制造引用本文复制引用
范文,周岭,马运通,马生麒,施卫东..叶轮叶片高度对旋涡泵水力性能的影响[J].南通大学学报（自然科学版）,2024,23(3):59-65,81,8.基金项目
国家自然科学基金面上项目(52079058) （52079058）
江苏省杰出青年基金项目(BK20230011) （BK20230011）
