The present article studies the combined influence of the micropolar lubricant and thermal effects in the slot entry hybrid journal bearings. Bearing performance characteristics are computed by the concurrent solution of modified Reynolds, three-dimensional micropolar energy, and three-dimensional conduction equations. Thermohydrostatic characteristics of the slot entry hybrid journal bearings have been studied vis-à-vis isothermal characteristics. The results obtained numerically indicate that isoviscous assumption of the lubricant is incorrect and the bearing performance is significantly affected by the increase in temperature. Hence, it is essential to consider the thermal effects for the bearings operating with the micropolar lubricant for reliable performance analysis of the bearings.
EringenAC. Theory of micropolar fluids. J Math Mech1966; 16: 1–18.
2.
KhatakPGargHC. Influence of micropolar lubricant on bearings performance: A review. Proc IMechE, Part J: J Engineering Tribology2012; 226: 775–784.
3.
SinhaPSinghCPrasadKR. Viscosity variation considering cavitation in a journal bearing lubricant containing additives. Wear1983; 86: 43–56.
4.
SinghCSinhaP. The three dimensional Reynolds equation for micropolar fluid lubricated bearings. Wear1982; 76: 199–209.
5.
RahmatabadiADNekoeimehrMRashidiR. Micropolar lubricant effects on the performance of noncircular lobed bearings. Tribol Int2010; 43: 404–413.
6.
RahmatabadiADMeybodiRRNekoeimehrM. Preload effects on the static performance of multi-lobe fixed profile journal bearings with micropolar fluids. Proc IMechE, Part J: J Engineering Tribology2011; 225: 718–730.
7.
NaduvinamaniNBKadadiAK. Effect of viscosity variation on the micropolar fluid squeeze film lubrication of a short journal bearing. Adv Tribol2013; 1: 1–7.
8.
ElsharkawyAAAl-FadhalahKJ. Squeeze film characteristics between a sphere and a rough porous flat plate with micropolar fluids. Lubr Sci2011; 23: 1–18.
9.
Zare MehrjardiMRahmatabadiADRashidi MeybodiR. A study on the stability performance of noncircular lobed journal bearings with micropolar lubricant. Proc IMechE, Part J: J Engineering Tribology2015.
10.
BansalPChattopadhayayAKAgrawalVP. Linear stability analysis of hydrodynamic journal bearings with a flexible liner and micropolar lubrication. Tribol Trans2015; 58: 316–326.
GargHCKumarVShardaHB. Performance of slot-entry hybrid journal bearings considering combined influences of thermal effects and non-Newtonian behavior of lubricant. Tribol Int2010; 43: 1518–1531.
13.
KumarVSharmaSCJainSC. Stability margin of hybrid journal bearings: Influence of thermal and elastic effects. J Tribol2004; 126: 630–634.
14.
GargHCKumarVShardaHB. Non-Newtonian and thermal effects in constant flow valve compensated symmetric hole-entry hybrid journal bearing. Lubr Sci2007; 19: 269–286.
15.
GargHCKumarV. Analysis of thermal eeffects in capillary compensated hole-entry hybrid journal bearings lubricated with a Non-newtonian lubricant. Proc IMechE, Part J: J Engineering Tribology2010; 224: 317–334.
16.
GargHCKumarVShardaHB. A comparative thermal analysis of slot-entry and hole entry hybrid journal bearings lubricated with Non-newtonian lubricant. J Tribol2010; 132: 41701–041701–11.
17.
KhonsariMMBreweDE. Effect of viscous dissipation on the lubrication characteristics of micropolar fluids. Acta Mech1994; 105: 57–68.
18.
WangX-LZhuK-Q. Numerical analysis of journal bearings lubricated with micropolar fluids including thermal and cavitating effects. Tribol Int2006; 39: 227–237.
19.
KhatakPGargHC. Performance analysis of capillary compensated hybrid journal bearing by considering combined influence of thermal effects and micropolar lubricant. J Tribol2016; 139: 11707–11712.
20.
KhatakPGargHC. Thermohydrostatic analysis of hybrid journal bearing compensated by constant flow valve operating with micropolar lubricant. Proc IMechE, Part J: J Engineering Tribology2016; 230: 1041–1055.
21.
SinhasanRSharmaSCJainSC. Performance characteristics of a constant flow valve compensated multirecess flexible hydrostatic journal bearing. Wear1989; 134: 335–356.
22.
SharmaSCRajputAK. Influence of micropolar lubrication on the performance of 4-pocket capillary compensated conical hybrid journal bearing. Adv Tribol2012; 2012: 1–18.
23.
NeedsSJ. Boundary film investigations. Trans ASME1940; 62: 331–342.
24.
HennikerJC. The depth of the surface zone of a liquid. Mod Phys1949; 21: 322–341.
