江苏大学学报（自然科学版）2011，Vol.32Issue(5)：516-521,6.DOI:10.3969/j.issn.1671-7775.2011.05.005
基于流场数值模拟的多级泵转子动力学分析
Rotor dynamic analysis of multistage pump based on numerical simulation of flow field
摘要
Abstract
According to 2-D map of multistage pump, the main parts of rotor system were modeled by Pro/E software. The fluid field of multistage pump was numerical simulated by FLUENT program to analysis the changes of axial force and radial force at different work conditions. With the static loading on rotor system, statics, harmonic response and transient dynamics were analyzed by ANSYS program. The results show that it is nonlinear relationship between the amplitude and speed of rotor system when the rotor system is operated in safe zone under the first critical speed. Applied exciting force, each node at beginning stage shows large amplitude, and the amplitude decreases gradually to a stable value. The vibration amplitude of left bearing nodes is an order larger than that of right. The vibration amplitude of first grade impeller is slightly larger than that of secondary impeller. There is obvious beat vibration in displacement vibration cures. The stability of system is good with small amplitude when the node vibration tends to be constant.关键词
转子动力学/数值模拟/静力学/谐响应/瞬态动力学Key words
rotor dynamics/ numerical simulation/ statics/ harmonic response/ transient dynamics分类
机械制造引用本文复制引用
孔繁余,王婷,张洪利..基于流场数值模拟的多级泵转子动力学分析[J].江苏大学学报（自然科学版）,2011,32(5):516-521,6.基金项目
国家科技支撑计划项目(2008BAF34B10) （2008BAF34B10）
