Hysteresis in Oil Flow through a Rotating Tube with Twin Exit Branches
Oil enters a horizontal rotating tube through a radially-attached duct at one end. The tube with the other end closed is attached with radial twin exit branches permitting oil to exit into open air. Air begins to enter through one of the two branches into the tube when its rotational speed reaches c...
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| Format: | Article |
| Language: | English |
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Wiley
1997-01-01
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| Series: | International Journal of Rotating Machinery |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1155/S1023621X97000237 |
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| _version_ | 1850176744250671104 |
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| author | Sun-Wen Cheng Wen-Jei Yang |
| author_facet | Sun-Wen Cheng Wen-Jei Yang |
| author_sort | Sun-Wen Cheng |
| collection | DOAJ |
| description | Oil enters a horizontal rotating tube through a radially-attached duct at one end. The tube
with the other end closed is attached with radial twin exit branches permitting oil to exit into
open air. Air begins to enter through one of the two branches into the tube when its rotational
speed reaches certain critical values. An experimental study is performed to investigate this
air-oil two-phase flow behavior. Both the tube and the branches are transparent to allow
illumination and flow visualization during spin-up and spin-down processes. The branch-totube
diameter ratio, rotational speed, and oil flow rate are varied. Changes in oil flow rates
are measured as a function of rotational speed. A comparison is made between cases of a
varying total oil flow rate due to rotation effects and a constant one under control. It is
disclosed that cavitation in oil flow is induced by air entering the branches opposite to the
ejecting oil flow. Subsequently air bubbles progress in the tube. The origin of this intrusion
depends on the hydraulic head loss of the piping system. This study can be applied to oil
lubrication analysis of rotating machinery, such as automotive transmission lines. |
| format | Article |
| id | doaj-art-b85d64505e4f4451befda48caf778d92 |
| institution | OA Journals |
| issn | 1023-621X |
| language | English |
| publishDate | 1997-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-b85d64505e4f4451befda48caf778d922025-08-20T02:19:11ZengWileyInternational Journal of Rotating Machinery1023-621X1997-01-013424925810.1155/S1023621X97000237Hysteresis in Oil Flow through a Rotating Tube with Twin Exit BranchesSun-Wen Cheng0Wen-Jei Yang1Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor 48109, MI, USADepartment of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor 48109, MI, USAOil enters a horizontal rotating tube through a radially-attached duct at one end. The tube with the other end closed is attached with radial twin exit branches permitting oil to exit into open air. Air begins to enter through one of the two branches into the tube when its rotational speed reaches certain critical values. An experimental study is performed to investigate this air-oil two-phase flow behavior. Both the tube and the branches are transparent to allow illumination and flow visualization during spin-up and spin-down processes. The branch-totube diameter ratio, rotational speed, and oil flow rate are varied. Changes in oil flow rates are measured as a function of rotational speed. A comparison is made between cases of a varying total oil flow rate due to rotation effects and a constant one under control. It is disclosed that cavitation in oil flow is induced by air entering the branches opposite to the ejecting oil flow. Subsequently air bubbles progress in the tube. The origin of this intrusion depends on the hydraulic head loss of the piping system. This study can be applied to oil lubrication analysis of rotating machinery, such as automotive transmission lines.http://dx.doi.org/10.1155/S1023621X97000237Rotating tubeTwin exit branchesCavitationAir-oil flowHysteresisLubrication. |
| spellingShingle | Sun-Wen Cheng Wen-Jei Yang Hysteresis in Oil Flow through a Rotating Tube with Twin Exit Branches International Journal of Rotating Machinery Rotating tube Twin exit branches Cavitation Air-oil flow Hysteresis Lubrication. |
| title | Hysteresis in Oil Flow through a Rotating Tube
with Twin Exit Branches |
| title_full | Hysteresis in Oil Flow through a Rotating Tube
with Twin Exit Branches |
| title_fullStr | Hysteresis in Oil Flow through a Rotating Tube
with Twin Exit Branches |
| title_full_unstemmed | Hysteresis in Oil Flow through a Rotating Tube
with Twin Exit Branches |
| title_short | Hysteresis in Oil Flow through a Rotating Tube
with Twin Exit Branches |
| title_sort | hysteresis in oil flow through a rotating tube with twin exit branches |
| topic | Rotating tube Twin exit branches Cavitation Air-oil flow Hysteresis Lubrication. |
| url | http://dx.doi.org/10.1155/S1023621X97000237 |
| work_keys_str_mv | AT sunwencheng hysteresisinoilflowthrougharotatingtubewithtwinexitbranches AT wenjeiyang hysteresisinoilflowthrougharotatingtubewithtwinexitbranches |