Comparison of static performance characteristics of 3-Axial groove water lubricated journal bearings: Reynolds and JFO models

Pai, Rammohan S and Pai, Raghuvir B and Majumdar, B C and Hargreaves, D J (2006) Comparison of static performance characteristics of 3-Axial groove water lubricated journal bearings: Reynolds and JFO models. In: AUSTRIB, Dec 3-6, 2006, Brisbane, Australia.

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Abstract

The steady state characteristics of water lubricated journal bearings having multiple axial grooves are obtained theoretically. The novelty of these bearings is that the lubricant (water) is fed under pressure from one end of the bearing, through the multiple axial grooves (groove angles may vary). These bearings can use the process fluid as the lubricant, as in the case of feed water pumps. The Reynolds equation is solved numerically by the finite difference method satisfying the Jacobsson- Floberg-Olsson boundary conditions. Experimental results indicate that the pressure remains constant for a major portion of the groove, while theory predicts a linear pressure drop from inlet to exit. Comparison of load capacity, attitude angle, volume flow rate and friction variable for various bearing number and eccentricity ratios, assuming linear pressure drop along the groove, shows that there is a significant difference between those obtained by the Reynolds model and the Jacobsson-Floberg-Olsson model. The Jacobsson-Floberg-Olsson model takes into account continuity of flow at both cavitation and reformation boundaries and therefore gives a better prediction of bearing characteristics.

Item Type: Conference or Workshop Item (Paper)
Subjects: Engineering > MIT Manipal > Aeronautical and Automobile
Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 27 May 2016 10:52
Last Modified: 27 May 2016 10:52
URI: http://eprints.manipal.edu/id/eprint/146188

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