Table of Contents
ISRN Mechanical Engineering
Volume 2012 (2012), Article ID 603460, 7 pages
http://dx.doi.org/10.5402/2012/603460
Research Article

A Study on the Performance of a Magnetic-Fluid-Based Hydrodynamic Short Journal Bearing

1Department of Mechanical Engineering, Faculty of Technology, Dharmsinh Desai University, Nadiad 387001, Gujarat, India
2Department of Mechanical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat 395007, Gujarat, India
3Department of Mathematics, Sardar Patel University, Vallabh Vidyanagar, Anand 388120, Gujarat, India

Received 20 September 2011; Accepted 16 October 2011

Academic Editors: S. W. Chang and A. Corigliano

Copyright © 2012 N. S. Patel et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Efforts have been made to study and analyze the performance of a hydrodynamic short journal bearing under the presence of a magnetic fluid lubricant. With the usual assumptions of hydrodynamic lubrication, the associated Reynolds equation for the fluid pressure is solved with appropriate boundary conditions. In turn, this is then used to calculate the load-carrying capacity which results in the calculation of friction. The computed results presented in graphical form suggest that the bearing system registers an improved performance owing to the magnetic fluid as compared to the conventional lubricant. It is clearly observed that the load-carrying capacity increases nominally while the coefficient of friction decreases significantly. Besides, it is seen that the bearing can support a load even when there is no flow of lubricant. In addition, this type of study may offer an additional degree of freedom from design point of view in terms of the forms of the magnitude of the magnetic fluid.