Lubrication Performances of Short Journal Bearings Operating with Non-Newtonian Ferrofluids

被引：8

作者：

Lin, Jaw-Ren ^{[1
]}

Li, Po-Jui ^{[2
]}

Hung, Tzu-Chen ^{[3
]}

机构：

[1] Taoyuan Innovat Inst Technol, Dept Mech Engn, Jhongli, Taiwan

[2] Natl Taipei Univ Technol, Dept Inst Mech Engn, Taipei, Taiwan

[3] Natl Taipei Univ Technol, Dept Mech Engn, Taipei, Taiwan

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 2013年 / 68卷 / 3-4期

关键词：

Ferrofluids; Non-Newtonian Effects; Journal Bearings; Reynolds Equation; Steady-State Performances; COUPLE-STRESSES;

D O I：

10.5560/ZNA.2012-0114

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The lubrication performances of short journal bearings operating with non-Newtonian ferrofluids have been investigated in the present study. Based upon the ferrofluid model of Shliomis and the micro-continuum theory of Stokes, a two-dimensional modified Reynolds equation is derived by taking into account the effects of rotation of ferromagnetic particles and the effects of non-Newtonian properties. As an application, the short-bearing approximation is illustrated. Comparing with the conventional non-ferrofluid case, the short journal bearings with ferrofluids in the presence of magnetic fields result in a higher load capacity. Comparing with the Newtonian ferrofluid case, the non-Newtonian effects of couple stresses provide an enhancement in the load capacity, as well as a reduction in the friction parameter. The inclusion of non-Newtonian couple stresses signifies an improvement in performance characteristics of ferrofluid journal bearings.

引用

页码：249 / 254

页数：6

共 13 条

[1] Calibration of low frequency magnetic field meters using a Helmholtz coil [J].

de Melo, Celso Fabricio ;

Araujo, Ricardo Luiz ;

Ardjomand, Leonardo Morozowski ;

Ramos Quoirin, Nilton S. ;

Ikeda, Minoru ;

Costa, Alexandre Albarello .

MEASUREMENT, 2009, 42 (09) :1330-1334

[2]

Hamrock B.J., 1994, FUNDAMENTALS FLUID F

[3] Linear stability analysis of long journal bearings: couple stress fluid model [J].

Liao, WH ;

Lu, RF ;

Chien, RD ;

Lin, AR .

INDUSTRIAL LUBRICATION AND TRIBOLOGY, 2005, 57 (01) :21-27

[4] Effects of couple stresses on the lubrication of finite journal bearings [J].

Lin, JR .

WEAR, 1997, 206 (1-2) :171-178

[5] Static characteristics of rotor bearing system lubricated with couple stress fluids [J].

Lin, JR .

COMPUTERS & STRUCTURES, 1997, 62 (01) :175-184

[6]

Mirzaeva G., 2012, Proceedings of the 2012 IEEE International Conference on Industrial Technology (ICIT 2012), P1020, DOI 10.1109/ICIT.2012.6210073

[7] LOAD ENHANCEMENT EFFECTS DUE TO POLYMER THICKENING IN A SHORT MODEL JOURNAL BEARING [J].

OLIVER, DR .

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 1988, 30 (2-3) :185-196

[8] LOAD ENHANCEMENT EFFECTS BY POLYMER-THICKENED OILS IN STRIP SQUEEZE FILM FLOW [J].

OLIVER, DR ;

SHAHIDULLAH, M .

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 1983, 13 (01) :93-102

[9]

SHLIOMIS MI, 1972, SOV PHYS JETP-USSR, V34, P1291

[10] A NUMERICAL APPROACH TO FINITE JOURNAL BEARINGS LUBRICATED WITH FERROFLUID [J].

SORGE, F .

JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME, 1987, 109 (01) :77-82

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