The transition from laminar to turbulent flow in the clearance space of high-speed hydrodynamic journal bearings poses significant challenges to their stability. This study explores the potential of surface texturing to enhance bearing performance under turbulent conditions. A comprehensive mathematical model is developed to evaluate square texture, circular texture and Mix texture implemented at various circumferential positions. Utilizing an optimized adaptive mesh code, the study reduces computation time while accurately simulating partial bearing areas. Key texture parameters, including cell size, density, depth and start/end angles, are systematically varied to identify optimal configurations. Stability charts highlight significant improvements, particularly with partial texturing, which outperforms full texturing in stability enhancement. This research underscores the critical role of texture optimization in mitigating the adverse effects of turbulent flow on bearing performance, offering novel insights for the design of more reliable high-speed rotating machinery.
CaponeGRussoMRussoR.Dynamic characteristics and stability of a journal bearing in a non-laminar lubrication regime. Tribol Int1987; 20(5): 255–260.
7.
KumarARaoNS.Steady state analysis of plain cylindrical journal bearings in turbulent regime. Indian J Eng Mater Sci1995; 2: 163–166.
8.
XuWZhaoSXuY, et al. Reynolds model versus JFO theory in steadily loaded journal bearings. Lubricants2021; 9(11): 111.
9.
CardulloFE.Some practical deductions from the theory of lubrication of short cylindrical bearings. Trans Am Soc Mech Eng1930; 52(8): 143–150.
10.
GanaiPAtwalJCPandeyRK, et al. Performance studies of self-acting oil-lubricated bump journal bearing under lightly loaded conditions employing pocketed top foils. Proc IMechE, Part C: J Mechanical Engineering Science2022; 236(15): 8714–8730.
11.
FengHJiangSJiA.Investigations of the static and dynamic characteristics of water-lubricated hydrodynamic journal bearing considering turbulent, thermos hydrodynamic and misaligned effects. Tribol Int2019; 130: 245–260.
12.
ZhangXYinZGaoG, et al. Determination of stiffness coefficients of hydrodynamic water-lubricated plain journal bearings. Tribol Int2015; 85: 37–47.
13.
MateleSPandeyKN.Effect of surface texturing on the dynamic characteristics of hydrodynamic journal bearing comprising concepts of green tribology. Proc IMechE, Part J: J Engineering Tribology2018; 232(11): 1365–1376.
14.
LundJWThomsenKK. A calculation method and data for the dynamic coefficients of oil-lubricated journal bearings. In: Topics in fluid film bearing and rotor bearing system design and optimization, New York, 1978, p.1000118. New York: ASME.
15.
DwivediVKChandSPandeyKN.Effect of different flow regime on the static and dynamic performance parameter of hydrodynamic bearing. Procedia Eng2013; 51: 520–528.
16.
KumarMPandeyKN.Enhancing journal bearing performance through surface texturing: a comprehensive review of latest developments and future prospects. Proc IMechE, Part E: J Process Mechanical Engineering2023; 0(0). https://doi.org/10.1177/09544089231211230
KovalchenkoOAjayiAFenske ErdemirG, et al. The effect of laser surface texturing on transitions in lubrication regimes during unidirectional sliding contact. Tribol Int2005; 38: 219–225.
19.
SiripuramRBStephensLS.Effect of deterministic asperity geometry on hydrodynamic lubrication. J Tribol2004; 126: 527–534.
20.
DobricaMFillonMMaspeyrotP.Mixed elastohydrodynamic lubrication in partial journal bearing—comparison between deterministic and stochastic models. J Tribol2006; 128(4): 778–788.
21.
CupillardSGlavatskihSCervantesMJ.Computational fluid dynamics analysis of journal bearing with surface texturing. Proc IMechE, Part J: J Engineering Tribology2008; 222: 97–107.
22.
BuscagliaGCCiupercaIJaiM.The effect of periodic textures on the static characteristics of thrust bearings. J Tribol2005; 127: 899–902.
23.
FowelMOlverAVGosmanAD, et al. Entrainment and inlet suction: two mechanisms of hydrodynamic lubrication in textured bearings. J Tribol2007; 129: 336–347.
24.
RahmaniRShirvaniAShirvaniH.Optimization of partially textured parallel thrust bearings with square-shaped micro-dimples. Tribol Trans2007; 50: 401–406.
25.
MurthyANEtsionITalkeFE.Analysis of surface textured air bearing sliders with rarefaction effects. Tribol Lett2007; 28: 251–261.
26.
Tala-IghilNMaspeyrotPFillonM, et al. Effects of surface texture on journal bearing characteristics under steady state operating conditions. Proc IMechE, Part J: J Engineering Tribology2007; 221(16): 623–634.
27.
ArghirMRoucouNHeleneM, et al. Theoretical analysis of the incompressible laminar flow in a macro-roughness cell. J Tribol2003; 125(2): 309–318.
28.
SahlinFGlavatskikhSAlmqvistT, et al. Two dimensional CFD analysis of micro patterned surfaces in hydrodynamic lubrication. J Tribol2005; 127(1): 96–102.
29.
De KrakerAOstryenRAJVan BeekA, et al. A multiscale method modelling surface texture effects. J Tribol2007; 129: 221–230.
30.
CupillardSCervantesMJGlavatskihS.Pressure buildup mechanism in a textured inlet of a hydrodynamic contact. J Tribol2008; 130(2): 137–140.
31.
CupillardSGlavatskihSCervantesMJ.Inertial effects in textured hydrodynamic contacts. Proc IMechE, Part J: J Engineering Tribology2010; 224: 751–756.
32.
BuscagliaGCCiupercaIJaiM.On the optimization of surface textures for lubricated contacts. J Math Anal Appl2007; 335: 1309–1327.
33.
KumarMSinghS.Parametric study of textured hydrodynamic journal bearing for turbulent flow using CFD analysis. Int J Interact Des Manuf2025; 19(4): 2987–2997.
34.
NarwatKKumarVSinghSJ, et al. Performance of rough surface hydrodynamic circular and multi-lobe journal bearings in turbulent regimes. Proc IMechE, Part J: J Engineering Tribology2023; 237(4): 860–880.
35.
MaoYLiLLiD, et al. Analysis of the turbulent lubrication of a textured hydrodynamic journal bearing. Lubricants2023; 11(9): 362.
