Two-Phase Flow CFD Analysis of Temperature Effects on Oil Supplied to Small-Bore Journal Bearing with Oil Supply Groove
Oil whips might present a risk that is associated with bearing seizures. To conveniently suppress oil whips, a stabilization method using starved lubrication has been proposed. As the oil film becomes thinner, an increase in oil film temperature is expected. In this study, the bearing temperature wa...
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Japanese Society of Tribologists
2018
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oai:doaj.org-article:5b0b7ecaa8d240a4b0f1140ed1d34a632021-11-05T09:18:59ZTwo-Phase Flow CFD Analysis of Temperature Effects on Oil Supplied to Small-Bore Journal Bearing with Oil Supply Groove1881-219810.2474/trol.13.232https://doaj.org/article/5b0b7ecaa8d240a4b0f1140ed1d34a632018-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/13/5/13_232/_pdf/-char/enhttps://doaj.org/toc/1881-2198Oil whips might present a risk that is associated with bearing seizures. To conveniently suppress oil whips, a stabilization method using starved lubrication has been proposed. As the oil film becomes thinner, an increase in oil film temperature is expected. In this study, the bearing temperature was studied in the cases of oil whip, transition condition, and starved lubrication. Moreover, the temperature distributions in the transition and starved lubrication conditions were studied using a two-phase flow computational fluid dynamics (CFD) analysis. As a result, it was found that the heat amount due to shear friction was small in the case of the transition condition, whereas the temperature inside the bearing was approximately the same as that of the supply oil, from both experimental and analytical perspectives. In the case of the starved lubrication condition, it was found that the air flowing out of the oil supply groove created a circulated flow, which cooled the side end of the bearing, thereby controlling the temperature at the center of the bearing.Fuma SakaiMasayuki OchiaiHiromu HashimotoJapanese Society of Tribologistsarticlejournal bearingbearing temperaturesmall-boreoil whipstarved lubricationoil controltwo-phase flow cfd analysisPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 13, Iss 5, Pp 232-240 (2018) |
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DOAJ |
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DOAJ |
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EN |
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journal bearing bearing temperature small-bore oil whip starved lubrication oil control two-phase flow cfd analysis Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 |
| spellingShingle |
journal bearing bearing temperature small-bore oil whip starved lubrication oil control two-phase flow cfd analysis Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Fuma Sakai Masayuki Ochiai Hiromu Hashimoto Two-Phase Flow CFD Analysis of Temperature Effects on Oil Supplied to Small-Bore Journal Bearing with Oil Supply Groove |
| description |
Oil whips might present a risk that is associated with bearing seizures. To conveniently suppress oil whips, a stabilization method using starved lubrication has been proposed. As the oil film becomes thinner, an increase in oil film temperature is expected. In this study, the bearing temperature was studied in the cases of oil whip, transition condition, and starved lubrication. Moreover, the temperature distributions in the transition and starved lubrication conditions were studied using a two-phase flow computational fluid dynamics (CFD) analysis. As a result, it was found that the heat amount due to shear friction was small in the case of the transition condition, whereas the temperature inside the bearing was approximately the same as that of the supply oil, from both experimental and analytical perspectives. In the case of the starved lubrication condition, it was found that the air flowing out of the oil supply groove created a circulated flow, which cooled the side end of the bearing, thereby controlling the temperature at the center of the bearing. |
| format |
article |
| author |
Fuma Sakai Masayuki Ochiai Hiromu Hashimoto |
| author_facet |
Fuma Sakai Masayuki Ochiai Hiromu Hashimoto |
| author_sort |
Fuma Sakai |
| title |
Two-Phase Flow CFD Analysis of Temperature Effects on Oil Supplied to Small-Bore Journal Bearing with Oil Supply Groove |
| title_short |
Two-Phase Flow CFD Analysis of Temperature Effects on Oil Supplied to Small-Bore Journal Bearing with Oil Supply Groove |
| title_full |
Two-Phase Flow CFD Analysis of Temperature Effects on Oil Supplied to Small-Bore Journal Bearing with Oil Supply Groove |
| title_fullStr |
Two-Phase Flow CFD Analysis of Temperature Effects on Oil Supplied to Small-Bore Journal Bearing with Oil Supply Groove |
| title_full_unstemmed |
Two-Phase Flow CFD Analysis of Temperature Effects on Oil Supplied to Small-Bore Journal Bearing with Oil Supply Groove |
| title_sort |
two-phase flow cfd analysis of temperature effects on oil supplied to small-bore journal bearing with oil supply groove |
| publisher |
Japanese Society of Tribologists |
| publishDate |
2018 |
| url |
https://doaj.org/article/5b0b7ecaa8d240a4b0f1140ed1d34a63 |
| work_keys_str_mv |
AT fumasakai twophaseflowcfdanalysisoftemperatureeffectsonoilsuppliedtosmallborejournalbearingwithoilsupplygroove AT masayukiochiai twophaseflowcfdanalysisoftemperatureeffectsonoilsuppliedtosmallborejournalbearingwithoilsupplygroove AT hiromuhashimoto twophaseflowcfdanalysisoftemperatureeffectsonoilsuppliedtosmallborejournalbearingwithoilsupplygroove |
| _version_ |
1718444412373041152 |