Rheological behavior’s effect on the work performance of oil film

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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Acknowledgments

This study was supported by the National Natural Science Foundation of China (Grant Nos. 11072011 and 11002007) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry.

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg