Study on transient performance of tilting-pad thrust bearings in nuclear pump considering fluid-structure interaction
To study the lubrication performance of tilting-pad thrust bearing (TPTBs) during start-up in nuclear pump, a hydrodynamic lubrication model of TPTBs was established based on the computational fluid dynamics (CFD) method and the fluid-structure interaction (FSI) technique. Further, a mesh motion alg...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S173857332300116X |
| _version_ | 1797811038293327872 |
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| author | Qiang Li Bin Li Xiuwei Li Quntao Xie Qinglei Liu Weiwei Xu |
| author_facet | Qiang Li Bin Li Xiuwei Li Quntao Xie Qinglei Liu Weiwei Xu |
| author_sort | Qiang Li |
| collection | DOAJ |
| description | To study the lubrication performance of tilting-pad thrust bearing (TPTBs) during start-up in nuclear pump, a hydrodynamic lubrication model of TPTBs was established based on the computational fluid dynamics (CFD) method and the fluid-structure interaction (FSI) technique. Further, a mesh motion algorithm for the transient calculation of thrust bearings was developed based on the user defined function (UDF).The result demonstrated that minimum film thickness increases first and then decreases with the rotational speed under start-up condition. The influence of pad tilt on minimum film thickness is greater than that of collar movement at low speed, and the establishment of dynamic pressure mainly depends on pad tilt and minimum film thickness increases. As the increase of rotational speed, the influence of pad tilt was abated, where the influence of the moving of the collar dominated gradually, and minimum film thickness decreases. For TPTBs, the circumferential angle of the pad is always greater than the radial angle. When the rotational speed is constant, the change rate of radial angle is greater than that of circumferential angle with the increase of loading forces. This study can provide reference for improving bearing wear resistance. |
| first_indexed | 2024-03-13T07:17:44Z |
| format | Article |
| id | doaj.art-10b1c56752d1477c953320e378683814 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-03-13T07:17:44Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-10b1c56752d1477c953320e3786838142023-06-05T04:12:42ZengElsevierNuclear Engineering and Technology1738-57332023-06-0155623252334Study on transient performance of tilting-pad thrust bearings in nuclear pump considering fluid-structure interactionQiang Li0Bin Li1Xiuwei Li2Quntao Xie3Qinglei Liu4Weiwei Xu5Corresponding author.; College of New Energy, China University of Petroleum (East China), Qingdao, 266580, ChinaCollege of New Energy, China University of Petroleum (East China), Qingdao, 266580, ChinaCollege of New Energy, China University of Petroleum (East China), Qingdao, 266580, ChinaCollege of New Energy, China University of Petroleum (East China), Qingdao, 266580, ChinaCollege of New Energy, China University of Petroleum (East China), Qingdao, 266580, ChinaCollege of New Energy, China University of Petroleum (East China), Qingdao, 266580, ChinaTo study the lubrication performance of tilting-pad thrust bearing (TPTBs) during start-up in nuclear pump, a hydrodynamic lubrication model of TPTBs was established based on the computational fluid dynamics (CFD) method and the fluid-structure interaction (FSI) technique. Further, a mesh motion algorithm for the transient calculation of thrust bearings was developed based on the user defined function (UDF).The result demonstrated that minimum film thickness increases first and then decreases with the rotational speed under start-up condition. The influence of pad tilt on minimum film thickness is greater than that of collar movement at low speed, and the establishment of dynamic pressure mainly depends on pad tilt and minimum film thickness increases. As the increase of rotational speed, the influence of pad tilt was abated, where the influence of the moving of the collar dominated gradually, and minimum film thickness decreases. For TPTBs, the circumferential angle of the pad is always greater than the radial angle. When the rotational speed is constant, the change rate of radial angle is greater than that of circumferential angle with the increase of loading forces. This study can provide reference for improving bearing wear resistance.http://www.sciencedirect.com/science/article/pii/S173857332300116XNuclear pumpTilting pad thrust bearingsFluid-structural interactionStart-upUser defined function (UDF)Computational fluid dynamic (CFD) |
| spellingShingle | Qiang Li Bin Li Xiuwei Li Quntao Xie Qinglei Liu Weiwei Xu Study on transient performance of tilting-pad thrust bearings in nuclear pump considering fluid-structure interaction Nuclear Engineering and Technology Nuclear pump Tilting pad thrust bearings Fluid-structural interaction Start-up User defined function (UDF) Computational fluid dynamic (CFD) |
| title | Study on transient performance of tilting-pad thrust bearings in nuclear pump considering fluid-structure interaction |
| title_full | Study on transient performance of tilting-pad thrust bearings in nuclear pump considering fluid-structure interaction |
| title_fullStr | Study on transient performance of tilting-pad thrust bearings in nuclear pump considering fluid-structure interaction |
| title_full_unstemmed | Study on transient performance of tilting-pad thrust bearings in nuclear pump considering fluid-structure interaction |
| title_short | Study on transient performance of tilting-pad thrust bearings in nuclear pump considering fluid-structure interaction |
| title_sort | study on transient performance of tilting pad thrust bearings in nuclear pump considering fluid structure interaction |
| topic | Nuclear pump Tilting pad thrust bearings Fluid-structural interaction Start-up User defined function (UDF) Computational fluid dynamic (CFD) |
| url | http://www.sciencedirect.com/science/article/pii/S173857332300116X |
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