摘要
The elimination of rotor vibration is usually achieved by applying additional damping to the system.Squeeze film dampers are widely used in various aerospace and turbine equipments.The research is carried out on flow characteristics in the integral squeeze film dampers(ISFDs).The dynamic response to the operation condition is investigated through the computational fluid dynamics(CFD) model of ISFD.Due to the large pressure loss at the oil inlet,the oil film force only changes slightly with the increase of oil supply pressure,and the damping increases slightly.The vibration amplitude only affects the film force,but has no effect on the damping.The oil film force and damping show an upward tendency with the decrease of thickness of the end seal clearance.
作者
LI Geng
HE Lidong
JIA Xingyun
ZHANG Yipeng
WANG Jian
李耕;HE Lidong;JIA Xingyun;ZHANG Yipeng;WANG Jian(Engineering Research Center of Chemical Safety Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,P.R.China)
基金
Supported by the National Science and Technology Major Project (No.2017-ⅠV-0010-0047)
China Postdoctoral Science Foundation Funded Project (No.2020M6701 13)
Fundamental Research Funds for the Central Universities (No.JD2003)。
