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

doi:10.1007/s11465-011-0129-y

Front Mech Eng

2011, Vol. 6

Issue (2) : 254-262 https://doi.org/10.1007/s11465-011-0129-y

RESEARCH ARTICLE

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

Zhaomiao LIU(

), Qiuying JIN, Chengyin ZHANG, Feng SHEN

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

Corresponding Author(s): LIU Zhaomiao,Email:lzm@bjut.edu.cn

Issue Date: 05 June 2011

Cite this article:

Zhaomiao LIU,Qiuying JIN,Chengyin ZHANG, et al. Rheological behavior’s effect on the work performance of oil film[J]. Front Mech Eng, 2011, 6(2): 254-262.

URL:

https://academic.hep.com.cn/fme/EN/10.1007/s11465-011-0129-y
https://academic.hep.com.cn/fme/EN/Y2011/V6/I2/254

Fig.1 Sketch of hydrostatic turntable

Fig.2 Sketch of single oil cavity shape

Fig.3 Section of whole oil chamber. (a) Calculation model’s section of oil chamber; (b) Schematic diagram of whole oil chamber’s model grid

Tab.1 Pressure distribution on oil cavity’s upper wall under various conditions

Fig.16 Curves of pressure at chamber’s axis with 10 rpm speed

Fig.17 Curves of pressure at chamber’s axis with 50 rpm speed

Fig.18 Curves of pressure at chamber’s axis with 100 rpm speed

Fig.19 Curves of pressure at chamber’s axis with 200 rpm speed

Fig.20 Curves of pressure at chamber’s axis when = 0.9

Fig.21 Curves of pressure at chamber’s axis when = 1.0

Fig.22 Curves of pressure at chamber’s axis when = 1.05

Fig.23 Curves of wall shear stress at chamber’s axis with 10 rpm speed

Fig.24 Curves of wall shear stress at chamber’s axis with 50 rpm speed

Fig.25 Curves of wall shear stress at chamber’s axis with 100 rpm speed

Fig.26 Curves of wall shear stress at chamber’s axis with 200 rpm speed

Fig.27 Curves of wall shear stress at chamber’s axis when = 0.9

Fig.28 Curves of wall shear stress at chamber’s axis when = 1.0

Fig.29 Curves of wall shear stress at chamber’s axis when = 1.05

Fig.30 Curves of viscosity’s change at chamber’s axis when = 0.9

Fig.31 Curves of viscosity’s change at chamber’s axis when = 1.0

Fig.32 Curves of viscosity’s change at chamber’s axis when = 1.05

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