Effect of groove location on the stability of multiple axial groove water lubricated journal bearing-A non linear transient approach

Pai, Rammohan S and Rao, Srikanth D and Kini, Vijaya M and Shenoy, Satish B and Pai, Raghuvir B (2009) Effect of groove location on the stability of multiple axial groove water lubricated journal bearing-A non linear transient approach. In: International conference on Applied Mechanics and Mechanical Engineering, December 25-27, 2009, Bangkok, Thailand.

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Abstract

The stability characteristics of three axial grooves water lubricated journal bearings are studied theoretically. These bearings can use the process fluid as the lubricant as in the case of feed water pumps. The process fluid (water) is fed from one end of the bearing, through the three axial grooves (groove angles may vary). A non–linear analysis of a rigid rotor supported on journal bearings under unidirectional constant load, unidirectional periodic load and variable rotating load is carried out. The time–dependent Reynolds equation in two dimensions for incompressible fluid is solved numerically by the finite difference method with a successive over relaxation scheme satisfying the Reynold’s boundary conditions, to obtain the hydrodynamic forces. Using these forces, the equations of motion are solved by the fourth–order Runge–Kutta method to predict the transient behavior of the rotor. The analysis gives the orbital trajectory within the clearance circle

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: multiple axial grooves, Water lubricated journal bearing, Non linear transient analysis, stability
Subjects: Engineering > MIT Manipal > Aeronautical and Automobile
Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 27 May 2016 13:53
Last Modified: 27 May 2016 13:53
URI: http://eprints.manipal.edu/id/eprint/146191

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