Thermal Characteristics Study of the Bump Foil Thrust Gas Bearing
In this paper, a thermo-hydrodynamic model of the bump foil thrust gas bearing is developed, which solves the coupled gas film three-dimensional energy equation, non-isothermal Reynolds equation, and the foil deformation equation. The effects of bearing speed, thrust load, and external cooling gas o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/9/4311 |
| _version_ | 1797534741264596992 |
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| author | Xiaomin Liu Changlin Li Jianjun Du Guodong Nan |
| author_facet | Xiaomin Liu Changlin Li Jianjun Du Guodong Nan |
| author_sort | Xiaomin Liu |
| collection | DOAJ |
| description | In this paper, a thermo-hydrodynamic model of the bump foil thrust gas bearing is developed, which solves the coupled gas film three-dimensional energy equation, non-isothermal Reynolds equation, and the foil deformation equation. The effects of bearing speed, thrust load, and external cooling gas on the bearing temperature field are calculated and analyzed. The test rig of foil thrust gas bearing was built to measure the bearing temperature under different working conditions. Both simulation and experiment results show that there exist temperature gradients on the top foil both in the circumferential and radial directions. The simulation results also shows that the top foil side of the gas film has the highest temperature value in the entire lubrication field, and the position of highest temperature moves radially inward on the thrust plate side as the rotor speed increases. The gas film temperature increases with the increasing rotor speed and bearing static load, and rotor speed has greater effects on the temperature variation. Cooling air flow passing through the bump foil is also considered in the simulations, and the cooling efficiency decreases as the mass of gas flow increases. |
| first_indexed | 2024-03-10T11:33:47Z |
| format | Article |
| id | doaj.art-897a7c23179349548324f1af7f066695 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T11:33:47Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-897a7c23179349548324f1af7f0666952023-11-21T19:02:07ZengMDPI AGApplied Sciences2076-34172021-05-01119431110.3390/app11094311Thermal Characteristics Study of the Bump Foil Thrust Gas BearingXiaomin Liu0Changlin Li1Jianjun Du2Guodong Nan3School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, ChinaSchool of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, ChinaSchool of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, ChinaSchool of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, ChinaIn this paper, a thermo-hydrodynamic model of the bump foil thrust gas bearing is developed, which solves the coupled gas film three-dimensional energy equation, non-isothermal Reynolds equation, and the foil deformation equation. The effects of bearing speed, thrust load, and external cooling gas on the bearing temperature field are calculated and analyzed. The test rig of foil thrust gas bearing was built to measure the bearing temperature under different working conditions. Both simulation and experiment results show that there exist temperature gradients on the top foil both in the circumferential and radial directions. The simulation results also shows that the top foil side of the gas film has the highest temperature value in the entire lubrication field, and the position of highest temperature moves radially inward on the thrust plate side as the rotor speed increases. The gas film temperature increases with the increasing rotor speed and bearing static load, and rotor speed has greater effects on the temperature variation. Cooling air flow passing through the bump foil is also considered in the simulations, and the cooling efficiency decreases as the mass of gas flow increases.https://www.mdpi.com/2076-3417/11/9/4311bump foil gas bearingthermo-hydrodynamic modeltemperature fieldthermal characteristics analysis |
| spellingShingle | Xiaomin Liu Changlin Li Jianjun Du Guodong Nan Thermal Characteristics Study of the Bump Foil Thrust Gas Bearing Applied Sciences bump foil gas bearing thermo-hydrodynamic model temperature field thermal characteristics analysis |
| title | Thermal Characteristics Study of the Bump Foil Thrust Gas Bearing |
| title_full | Thermal Characteristics Study of the Bump Foil Thrust Gas Bearing |
| title_fullStr | Thermal Characteristics Study of the Bump Foil Thrust Gas Bearing |
| title_full_unstemmed | Thermal Characteristics Study of the Bump Foil Thrust Gas Bearing |
| title_short | Thermal Characteristics Study of the Bump Foil Thrust Gas Bearing |
| title_sort | thermal characteristics study of the bump foil thrust gas bearing |
| topic | bump foil gas bearing thermo-hydrodynamic model temperature field thermal characteristics analysis |
| url | https://www.mdpi.com/2076-3417/11/9/4311 |
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