Magnetic fluid lubrication of rough thrust bearings considering a sine film profile
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The purpose of this research article is to study theoretically the in uence of transverse surface roughness on the performance of a magnetic uid based sine lm pro le in thrust bearings. In many lubri- cation situations it is required to place the lubricant at a desired posi- tion and then retain it there. By applying an external magnetic eld, ferro uids can be con ded, positioned, shaped and, controlled at desired places. To explore the e ects of magnetic uid to the bearings, Neuringer- Rosensweig model has been invoked. As the a ections of the surface roughness to the bearing, the stochastically averaged Reynolds equation has been solved with appropriate boundary conditions to achieve the appearance for lm pressure, which is then used to calculate the load support. The simulated results based on a non-Newtonian lubricant with surface roughness has been presented in terms of uid lm thickness (in- let and outlet ratio), uid lm pressure and load support. The presented results have valuable in case of transversely rough surface compensated with load support. In addition, it will provide more messages in bearing selection and designing.
Abstract
The purpose of this research article is to study theoretically the in uence of transverse surface roughness on the performance of a magnetic uid based sine lm pro le in thrust bearings. In many lubri- cation situations it is required to place the lubricant at a desired posi- tion and then retain it there. By applying an external magnetic eld, ferro uids can be con ded, positioned, shaped and, controlled at desired places. To explore the e ects of magnetic uid to the bearings, Neuringer- Rosensweig model has been invoked. As the a ections of the surface roughness to the bearing, the stochastically averaged Reynolds equation has been solved with appropriate boundary conditions to achieve the appearance for lm pressure, which is then used to calculate the load support. The simulated results based on a non-Newtonian lubricant with surface roughness has been presented in terms of uid lm thickness (in- let and outlet ratio), uid lm pressure and load support. The presented results have valuable in case of transversely rough surface compensated with load support. In addition, it will provide more messages in bearing selection and designing.
참고문헌 (18)
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