| LI Geng(李耕),HE Lidong,JIA Xingyun,ZHANG Yipeng,WANG Jian.[J].高技术通讯(英文),2022,28(3):317~327 |
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| Numerical investigation on damping coefficient of the integral squeeze film damper |
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| DOI：10.3772/j.issn.1006-6748.2022.03.011 |
| 中文关键词: |
| 英文关键词: integral squeeze film damper (ISFD), numerical method, oil film force, damping coefficient |
| 基金项目: |
| Author Name | Affiliation | | LI Geng(李耕) | (Engineering Research Center of Chemical Safety Ministry of Education， Beijing University of Chemical Technology， Beijing 100029， P.R.China) | | HE Lidong | (Engineering Research Center of Chemical Safety Ministry of Education， Beijing University of Chemical Technology， Beijing 100029， P.R.China) | | JIA Xingyun | (Engineering Research Center of Chemical Safety Ministry of Education， Beijing University of Chemical Technology， Beijing 100029， P.R.China) | | ZHANG Yipeng | (Engineering Research Center of Chemical Safety Ministry of Education， Beijing University of Chemical Technology， Beijing 100029， P.R.China) | | WANG Jian | (Engineering Research Center of Chemical Safety Ministry of Education， Beijing University of Chemical Technology， Beijing 100029， P.R.China) |
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| 中文摘要: |
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| 英文摘要: |
| 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. |
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