Table of Contents
ISRN Tribology
Volume 2013 (2013), Article ID 732790, 9 pages
http://dx.doi.org/10.5402/2013/732790
Research Article

On the Possibilities of Decreasing Power Loss in Large Tilting Pad Thrust Bearings

Faculty of Mechanical Engineering, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland

Received 6 November 2012; Accepted 24 November 2012

Academic Editors: N. Gerolymos and Z. Wen

Copyright © 2013 Michal Wasilczuk and Grzegorz Rotta. 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

Different systems of direct oil supply have been developed in order to facilitate efficient introduction of fresh lubricant to the oil gap and reduction of churning power loss in tilting pad thrust bearings. Up to now there is no documented application of the supply groove in large thrust bearings used in water power plants. The results of modeling lubricant flow in the lubricating groove of a thrust bearing pad will be presented in the paper. CFD software was used to carry out fluid film calculations. Such analysis makes it possible to modify groove geometry and other parameters and to study their influence on bearing performance. According to the results a remarkable decrease in total power loss due to avoiding churning losses can be observed in the bearing.