Numerical investigation on the influence of surface texture on the performance of hydrodynamic journal bearing

Meccanica ◽  
2011 ◽  
Vol 47 (2) ◽  
pp. 469-482 ◽  
Author(s):  
S. Kango ◽  
D. Singh ◽  
R. K. Sharma
Keyword(s):  
Numerical Investigation ◽  
Surface Texture ◽  
Journal Bearing ◽  
Hydrodynamic Journal Bearing

Influence of Surface Texture on Lubrication Performance of Hydrodynamic Journal Bearing

2011 ◽  
Vol 120 ◽  
pp. 426-431 ◽  
Author(s):  
Su Hua Wang ◽  
Xin Yue Wu ◽  
Jian Hua Zheng
Keyword(s):  
Friction Coefficient ◽  
Surface Texture ◽  
Journal Bearing ◽  
Axial Direction ◽  
Diameter Ratio ◽  
Small Width ◽  
Lubrication Performance ◽  
Load Carrying ◽  
Hydrodynamic Journal Bearing ◽  
Inlet Zone

A finite-difference numerical model is used to study the influence of surface texture on lubrication performance of hydrodynamic journal bearing. Reynolds equation is adopted to calculate the bearing load carrying capacity, friction force and friction coefficient under different width-diameter ratio, different eccentricity ratio and different texture location. Results show that partial texture along the circumferential direction on the bearing with small width-diameter ratio will increase bearing performance appreciably. Partial texture along the axial direction will decrease friction coefficient effectively, especially at the film inlet zone or the position of film pressure trending to zero.

Enhancement of steady state performance of hydrodynamic journal bearing using chevron-shaped surface texture

2019 ◽  
Vol 233 (12) ◽  
pp. 1833-1843 ◽  
Author(s):  
Sanjay Sharma ◽  
Gourav Jamwal ◽  
Rajeev K Awasthi
Keyword(s):  
Steady State ◽  
Surface Texture ◽  
Journal Bearing ◽  
Performance Enhancement ◽  
Surface Texturing ◽  
Design Parameters ◽  
Enhancement Ratio ◽  
Shaped Surface ◽  
Hydrodynamic Journal Bearing ◽  
Steady State Performance

In the present study, the optimum design parameters of chevron-shaped surface texture have been determined for the steady state performance enhancement of a hydrodynamic journal bearing. The fluid flow governing Reynolds equation has been solved using the finite element method, assuming iso-viscous and Newtonian fluid to obtain the static performance characteristics of textured hydrodynamic journal bearing. Different texture depths, areas and distributions have been numerically simulated and a set of optimum texture parameters has been determined based on the maximum performance enhancement ratio. The numerically obtained results indicate that surface texturing can improve bearing performance if the textured region is placed in the pressure build-up region. Moreover, surface texturing is the most effective at bearing performance enhancement when the bearing operates at lower eccentricity ratios. The performance enhancement ratio, which is the ratio of load-carrying capacity to coefficient of friction is found to be maximum at texture depth of 0.4, k = 0.3, textured zone located in the increasing pressure region and eccentricity ratio of 0.2.

Static and dynamic analysis of hydrodynamic journal bearing operating under nano lubricants

2009 ◽  
Vol 2 (1/2/3/4/5/6) ◽  
pp. 251 ◽  
Author(s):  
K. Prabhakaran Nair ◽  
Mohammed Shabbir Ahmed ◽  
Saed Thamer Al qahtani
Keyword(s):  
Dynamic Analysis ◽  
Journal Bearing ◽  
Static And Dynamic Analysis ◽  
Hydrodynamic Journal Bearing
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