Improvement of Thrust Bearing Calculation Considering the Convectional Heating within the Space between the Pads

Monika Chmielowiec-Jablczyk; Andreas Schubert; Christian Kraft; Hubert Schwarze; Michał Wodtke; Michał Wasilczuk

doi:10.3390/lubricants6010022

Improvement of Thrust Bearing Calculation Considering the Convectional Heating within the Space between the Pads

Abstract

A modern thrust bearing tool is used to estimate the behavior of tilting pad thrust bearings not only in the oil film between pad and rotating collar, but also in the space between the pads. The oil flow in the space significantly influences the oil film inlet temperature and the heating of pad and collar. For that reason, it is necessary to define an oil mixing model for the space between the pads. In the bearing tool, the solutions of the Reynolds equation including a cavitation model, the energy equation and the heat transfer equation are done iteratively with the finite volume method by considering a constant flow rate. Both effects—laminar/turbulent flow and centrifugal force—are considered. The calculation results are compared with measurements done for a flooded thrust bearing with nominal eight tilting pads with an outer diameter of 180 mm. The heat convection coefficients for the pad surfaces mainly influence the pad temperature field and are adjusted to the measurement results. In the following paper, the calculation results for variable space distances, influence of different parameters on the bearing behavior and operating condition at high load are presented.

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Authors (6)

Monika Chmielowiec-Jablczyk
- GE Renewable Energy Hydro
Andreas Schubert
- GE Renewable Energy Hydro
Christian Kraft
- TU Clausthal Institute of Tribology and Energy Conversion Machinery
Hubert Schwarze
- TU Clausthal Institute of Tribology and Energy Conversion Machinery
Michał Wodtke dr hab. inż.
Michał Wasilczuk prof. dr hab. inż.

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Category:: Articles
Type:: publikacja w in. zagranicznym czasopiśmie naukowym (tylko język obcy)
Published in:: Lubricants no. 6, edition 1, pages 1 - 13,
ISSN: 2075-4442
Language:: English
Publication year:: 2018
Bibliographic description:: Chmielowiec-Jablczyk M., Schubert A., Kraft C., Schwarze H., Wodtke M., Wasilczuk M.. Improvement of Thrust Bearing Calculation Considering the Convectional Heating within the Space between the Pads. Lubricants, 2018, Vol. 6, iss. 1, s.1-13
DOI:: Digital Object Identifier (open in new tab) 10.3390/lubricants6010022
Verified by:: Gdańsk University of Technology