Viscosity monitoring and control on oil-film bearing lubrication with ferrofluids
Ferrofluid application in the oil-film bearing can improve the viscosity and the load-carrying capacity in a magnetic field. A solenoid was developed to provide magnetic field for ferrofluid, using which the distribution of magnetic induction intensity was calculated. The viscosity equation of ferro...
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| Veröffentlicht in: | Tribology international 2014-07, Vol.75, p.61-68 |
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| creator | Wang, Jianmei Kang, Jianfeng Zhang, Yanjuan Huang, Xunjie |
| description | Ferrofluid application in the oil-film bearing can improve the viscosity and the load-carrying capacity in a magnetic field. A solenoid was developed to provide magnetic field for ferrofluid, using which the distribution of magnetic induction intensity was calculated. The viscosity equation of ferrofluid was derived. The effects of oil-film temperature T, oil-film pressure P and magnetic intensity H on ferrofluid viscosity [eta] sub()fwas analyzed and tested by an unifactor experiment method. The control equations and transfer functions of each variable were given based on a large-scale oil-film bearing test rig. The variations of P, T, H and [eta] sub()fwere simulated and monitored by a reasonable control strategy. The results suggest that the viscosity increment by magnetic intensity could compensate the viscosity decrement by temperature rise. |
| doi_str_mv | 10.1016/j.triboint.2014.03.001 |
| format | Article |
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A solenoid was developed to provide magnetic field for ferrofluid, using which the distribution of magnetic induction intensity was calculated. The viscosity equation of ferrofluid was derived. The effects of oil-film temperature T, oil-film pressure P and magnetic intensity H on ferrofluid viscosity [eta] sub()fwas analyzed and tested by an unifactor experiment method. The control equations and transfer functions of each variable were given based on a large-scale oil-film bearing test rig. The variations of P, T, H and [eta] sub()fwere simulated and monitored by a reasonable control strategy. 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A solenoid was developed to provide magnetic field for ferrofluid, using which the distribution of magnetic induction intensity was calculated. The viscosity equation of ferrofluid was derived. The effects of oil-film temperature T, oil-film pressure P and magnetic intensity H on ferrofluid viscosity [eta] sub()fwas analyzed and tested by an unifactor experiment method. The control equations and transfer functions of each variable were given based on a large-scale oil-film bearing test rig. The variations of P, T, H and [eta] sub()fwere simulated and monitored by a reasonable control strategy. The results suggest that the viscosity increment by magnetic intensity could compensate the viscosity decrement by temperature rise.</abstract><doi>10.1016/j.triboint.2014.03.001</doi><tpages>8</tpages></addata></record> |
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| ispartof | Tribology international, 2014-07, Vol.75, p.61-68 |
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| language | eng |
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| source | ScienceDirect |
| subjects | Bearing Ferrofluids Magnetic fields Mathematical analysis Monitoring Strategy Tribology Viscosity |
| title | Viscosity monitoring and control on oil-film bearing lubrication with ferrofluids |
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