Simulation of large thrust-bearing performance at transient states, warm and cold start-up

Piotr Pajączkowski; Andreas Schubert; Michał Wasilczuk; Michał Wodtke

doi:10.1177/1350650113500483

Simulation of large thrust-bearing performance at transient states, warm and cold start-up

Abstract

The start-up of a large hydrodynamic thrust bearing of a vertical hydrogenerator is one of the most critical situations during the lifetime of a bearing. Hydrodynamic load capacity is low due to low speed and higher thermal deformations of the pad. A new approach to the simulation of a hydrodynamic bearing is shown in this article. A combination of finite elements method and computational fluid dynamics is used to perform the transient simulation of the bearing start-up. A bidirectional bearing of a pump-storage power plant is investigated. To show the potential advantages of the new method, a comparison of the warm and cold start procedure is presented. The thermal crowning of the bearing pad, oil film gap and other parameters of both cases are compared in this article.

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Authors (4)

Piotr Pajączkowski
- ALSTOM Hydro (Switzerland) HGTC
Andreas Schubert
- ALSTOM Hydro (Switzerland) HGTC
Michał Wasilczuk prof. dr hab. inż.
Michał Wodtke dr hab. inż.

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY no. 228, pages 96 - 103,
ISSN: 1350-6501
Language:: English
Publication year:: 2014
Bibliographic description:: Pajączkowski P., Schubert A., Wasilczuk M., Wodtke M.: Simulation of large thrust-bearing performance at transient states, warm and cold start-up// PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY. -Vol. 228, nr. 1 (2014), s.96-103
DOI:: Digital Object Identifier (open in new tab) 10.1177/1350650113500483
Verified by:: Gdańsk University of Technology