Influence of textured surface on the performance of non-recessed hybrid journal bearing operating with non-Newtonian lubricant

• Published in: Tribology international 2016-03, Vol.95, p.221-235
• Main Authors: Khatri, Chandra B., Sharma, Satish C.
• Format: Article
• Language: English
• Subjects: Computational fluid dynamics; Computer simulation; Finite element method; Fluid flow; Journal bearings; Lubricants; Mathematical models; Non-Newtonian lubricant; Non-recessed hybrid journal bearing; Stress-strain relationships; Surface texture; Tribology
• ISSN: 0301-679X; 1879-2464
• DOI: 10.1016/j.triboint.2015.11.017

In the present work, a comparative study between textured surface and non-textured surface non-recessed hybrid journal bearing configurations is presented. To obtain the performance characteristics parameters of non-recessed hybrid journal bearing, the Reynolds equation, which governs the flow of lubricant in the clearance space, is solved using FEM and the performance parameters are computed. The shear stress–strain relation of lubricant is modeled with the help of a power-law fluid model. The numerically simulated results show that the textured non-recessed hybrid journal bearing provides improved stability parameter than that of journal bearing with non-texturing. •Modeling of textured non-recessed hybrid journal bearing.•Compared the influence of full and partial textured surfaces on the surface of hybrid journal bearing.•Computed the non-Newtonian behavior of lubricant on the textured journal bearing.•We find that textured journal bearing improved the stability threshold speed margin.