Analysis of Drag Torque Characteristic of Hydro-viscous Clutch with Consideration of Cavitation Effect
In order to accurately predict the internal flow field and drag torque characteristics of the hydro-viscous clutch,with the flow field of double circular groove clearance as the research object,based on the principle of hydrodynamics and the Newtonian internal friction law,a two-phase flow CFD mathe...
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| Language: | zho |
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Editorial Office of Journal of Mechanical Transmission
2018-01-01
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| Series: | Jixie chuandong |
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| Online Access: | http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2018.08.010 |
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| author | Sun Chunlian |
| author_facet | Sun Chunlian |
| author_sort | Sun Chunlian |
| collection | DOAJ |
| description | In order to accurately predict the internal flow field and drag torque characteristics of the hydro-viscous clutch,with the flow field of double circular groove clearance as the research object,based on the principle of hydrodynamics and the Newtonian internal friction law,a two-phase flow CFD mathematical model considering cavitation effect is established,the fluid field is numerically simulated by FLUENT,and the influence of different rotational speed,inlet pressure and film thickness on field distribution,pressure distribution and drag torque characteristics are studied. The results show that the velocity distribution is inhomogeneous,and the fluid with the same direction of rotation has high velocity and has the function of diversion. The cavitation occurs in the intersection of the groove,the higher the speed,the larger the film thickness,the more the cavitation phenomenon. The high pressure region occurs at the entrance,and the pressure decreases with the radial direction,the negative pressure effect is generated at the outer edge. The bearing capacity is approximately linear with the rotation speed. The higher the rotational speed,the more obvious the shear stress increases. When the speed is less than（ 1 400 <sup> </sup>1 600） r/min,the drag torque is approximately linear with speed and then decreases slowly when reaching a certain peak. With the film thickness decreases,the drag torque is improved,and its peak point corresponds to a higher speed. |
| format | Article |
| id | doaj-art-d5ae67e4d85d426cb37914b450f1a0e3 |
| institution | Kabale University |
| issn | 1004-2539 |
| language | zho |
| publishDate | 2018-01-01 |
| publisher | Editorial Office of Journal of Mechanical Transmission |
| record_format | Article |
| series | Jixie chuandong |
| spelling | doaj-art-d5ae67e4d85d426cb37914b450f1a0e32025-01-10T14:40:56ZzhoEditorial Office of Journal of Mechanical TransmissionJixie chuandong1004-25392018-01-0142515429937888Analysis of Drag Torque Characteristic of Hydro-viscous Clutch with Consideration of Cavitation EffectSun ChunlianIn order to accurately predict the internal flow field and drag torque characteristics of the hydro-viscous clutch,with the flow field of double circular groove clearance as the research object,based on the principle of hydrodynamics and the Newtonian internal friction law,a two-phase flow CFD mathematical model considering cavitation effect is established,the fluid field is numerically simulated by FLUENT,and the influence of different rotational speed,inlet pressure and film thickness on field distribution,pressure distribution and drag torque characteristics are studied. The results show that the velocity distribution is inhomogeneous,and the fluid with the same direction of rotation has high velocity and has the function of diversion. The cavitation occurs in the intersection of the groove,the higher the speed,the larger the film thickness,the more the cavitation phenomenon. The high pressure region occurs at the entrance,and the pressure decreases with the radial direction,the negative pressure effect is generated at the outer edge. The bearing capacity is approximately linear with the rotation speed. The higher the rotational speed,the more obvious the shear stress increases. When the speed is less than（ 1 400 <sup> </sup>1 600） r/min,the drag torque is approximately linear with speed and then decreases slowly when reaching a certain peak. With the film thickness decreases,the drag torque is improved,and its peak point corresponds to a higher speed.http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2018.08.010Hydro-viscous clutchCavitation effectFlow field distributionDrag torque |
| spellingShingle | Sun Chunlian Analysis of Drag Torque Characteristic of Hydro-viscous Clutch with Consideration of Cavitation Effect Jixie chuandong Hydro-viscous clutch Cavitation effect Flow field distribution Drag torque |
| title | Analysis of Drag Torque Characteristic of Hydro-viscous Clutch with Consideration of Cavitation Effect |
| title_full | Analysis of Drag Torque Characteristic of Hydro-viscous Clutch with Consideration of Cavitation Effect |
| title_fullStr | Analysis of Drag Torque Characteristic of Hydro-viscous Clutch with Consideration of Cavitation Effect |
| title_full_unstemmed | Analysis of Drag Torque Characteristic of Hydro-viscous Clutch with Consideration of Cavitation Effect |
| title_short | Analysis of Drag Torque Characteristic of Hydro-viscous Clutch with Consideration of Cavitation Effect |
| title_sort | analysis of drag torque characteristic of hydro viscous clutch with consideration of cavitation effect |
| topic | Hydro-viscous clutch Cavitation effect Flow field distribution Drag torque |
| url | http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2018.08.010 |
| work_keys_str_mv | AT sunchunlian analysisofdragtorquecharacteristicofhydroviscousclutchwithconsiderationofcavitationeffect |