流体机械2009，Vol.37Issue(11)：9-14,6.DOI:10.3969/j.issn.1005-0329.2009.11.003
轴流泵叶轮内部流场大涡模拟及分析
Large-eddy Simulation and Analysis of Turbulent Flow in Axial Pump Impeller
摘要
Abstract
Large-eddy simulation combined with Characteristic-Based Split Scheme is performed to investigate the turbulent flows in axial pump impeller. The method's accuracy and reliability are examined through computing the flow around a wing of NACA0012 section and comparing results with DNS data. The predicted external characteristic curves of axial pump are basically identical with experiment data. Blade channel vortex and hydraulic pressure fluctuation are captured at blade tip under low flow rate condition. The unfavorable phenomena are related to the non-uniform distribution of impeller inlet axial velocity.关键词
大涡模拟/轴流泵/有限元法/压力脉动/叶道涡Key words
large-eddy simulation/ axial pump/ finite element method/ pressure fluctuation/ blade channel vortex分类
数理科学引用本文复制引用
梁开洪,曹树良,陈炎,祝宝山..轴流泵叶轮内部流场大涡模拟及分析[J].流体机械,2009,37(11):9-14,6.基金项目
国家自然科学基金项目(50776052),水沙科学与水利水电工程国家重点实验室自主研究课题资助项目(2008-ZY-2) （50776052）
