华中科技大学学报（自然科学版）2013，Vol.41Issue(4)：16-20,5.
管道泵压力脉动及振动的研究
Pressure pulsation and vibration in in-line circulator pumps
摘要
Abstract
To understand the relationship between pressure pulsation of unsteady flow and vibration, the 3D unsteady flow numerical simulations were executed on an in-line circulator pump with specific speed 221 to successfully capture the pressure pulsation characteristics of volute and tongue in the different flow rates conditions with commercial software. Numerical simulation results show that the phenomenon of amplitude of pressure pulsation in off-design conditions are higher than that of design point is uncovered, and the highest amplitude of pressure pulsation is generated near the tongue, which is caused by the interaction between blades and tongue. Moreover, it is demonstrate that the effect of pressure pulsation is related to the tongue angle, that is, in the off-design conditions, there is an angle deviation between outlet flow angle and tongue angle that makes intense impact between outflow and tongue. Additionally, the vibration amplitudes in the off-design conditions are higher than that of design point, which is further approved by vibration test. The test also reveals that the blade passing frequency and its multi-frequencies are the domain frequencies for the pressure pulsation, and vibration amplitude of tongue area is higher than the area far away from tongue. Above all, the developing trend of pressure pulsation is coincided with the developing trend of vibration amplitude, which can be concluded that pressure pulsation is a main contributor in the pump vibrations.关键词
压力脉动/振动/管道泵/数值模拟/动静干涉/非定常Key words
pressure pulsation/ vibration/ in-line circulator pump/ numerical simulation/ rotor-stator interaction/ unsteady分类
机械制造引用本文复制引用
吴登昊,袁寿其,任芸,张金凤..管道泵压力脉动及振动的研究[J].华中科技大学学报（自然科学版）,2013,41(4):16-20,5.基金项目
国家自然科学基金资助项目(50825902,51009072) （50825902,51009072）
江苏省自然科学基金资助项目(BK2009218,BK2010347) （BK2009218,BK2010347）
江苏省博士创新基金资助项目(CXZZ12_0677). （CXZZ12_0677）
