2011, Volume 6, Issue 2
Frontiers of Mechanical Engineering >> 2011, Volume 6, Issue 2 doi: 10.1007/s11465-011-0129-y
Rheological behavior’s effect on the work performance of oil film
College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100124, China
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Abstract
A 3D model of hydrostatic turntable’s oil chamber is established to investigate the lubricants performance with different rheological properties by using FLUENT software and the finite volume method. Newtonian oil and non-Newtonian oil’s performance under varied speeds are compared on the large size hydrostatic turntable system considering the temperature-viscosity relationship and pressure-viscosity relationship. The results show that the property of non-Newtonian fluid viscosity influenced by shear rate largely affects the lubricants performance for most oil added polymer additives. Lubricants cannot simply be regarded as Newtonian fluid. The shear thickening non-Newtonian fluid has a better work property. The results are important to design a large size and high-speed hydrostatic support system, choose lubricant oils, and investigate oil film’s work properties.
Keywords
non-Newtonian fluid ; rotation speed ; pressure on wall ; viscosity
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