Next Article in Journal
The Verification of Engine Analysis Model Accuracy by Measuring Oil Film Pressure in the Main Bearings of a Motorcycle High-Speed Engine Using a Thin-Film Sensor
Next Article in Special Issue
Measurement for Lubricant Distribution in an Angular Contact Ball Bearing and Its Influence Investigation
Previous Article in Journal
The Current Situation and Future Direction of Nanoparticles Lubricant Additives in China
Previous Article in Special Issue
Influence Analysis of Lubricant Recesses on the Working Capacity of the Bridge Span Spherical Bearing
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Lubricants
Volume 10
Issue 11
10.3390/lubricants10110313
lubricants-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

A Design for High-Speed Journal Bearings with Reduced Pad Size and Improved Efficiency

by
Thomas Hagemann
1,*,
Daniel Vetter
1,
Sören Wettmarshausen
1,
Michael Stottrop
2,
Alexander Engels
2,
Christoph Weißbacher
3,
Beate Bender
2 and
Hubert Schwarze
1
1
Institute of Tribology and Energy Conversion Machinery, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany
2
Product Development, Ruhr-University Bochum, 44801 Bochum, Germany
3
Gleitlagertechnik Weißbacher GmbH, 46519 Alpen, Germany
*
Author to whom correspondence should be addressed.
Lubricants 2022, 10(11), 313; https://doi.org/10.3390/lubricants10110313
Submission received: 30 September 2022 / Revised: 10 November 2022 / Accepted: 12 November 2022 / Published: 17 November 2022
(This article belongs to the Special Issue Friction and Lubrication of Sliding Bearings, Volume II)
Browse Figures
Versions Notes

Abstract

Improving efficiency is a general task in the design process of high-speed journal bearings. A specific fixed-pad bearing geometry featuring reduced pad length and additional design measures with the intention of reducing frictional power loss is investigated, experimentally and theoretically, for a journal diameter of 500 mm up to surface speeds of 94 m/s and unit loads of 5.0 MPa. To model fluid flow in the bearing outside the lubricant gap, an extension to Elrod’s cavitation algorithm based on assuming the inertia of fluid flow is proposed. Validation of the extended thermo-elasto-hydrodynamic lubrication (TEHL) model shows good agreement between measurement and prediction in wide operating ranges, however, with systematic tendencies of the remaining deviations. Furthermore, measured local pressure and film thickness distributions indicate a complex formation of cavitation with an influence of axial flow that is not covered by pure Couette-flow in the cavitation region. Measured as well as predicted data prove increased bearing efficiency for high rotor speeds. To provide understanding on the impact of the applied design measures improving efficiency, their combination is separated into the individual ones. Reduced axial and peripheral pad length both contribute almost equally to the reduction in power loss and improve its value by 37% compared to the standard design. Finally, further steps to deeper identify the behavior of the bearing are comprehensively discussed.
Keywords: journal bearing; measurement; prediction; cavitation; fluid flow; power loss; efficiency; turbomachinery applications journal bearing; measurement; prediction; cavitation; fluid flow; power loss; efficiency; turbomachinery applications
Graphical Abstract

Share and Cite

MDPI and ACS Style

Hagemann, T.; Vetter, D.; Wettmarshausen, S.; Stottrop, M.; Engels, A.; Weißbacher, C.; Bender, B.; Schwarze, H. A Design for High-Speed Journal Bearings with Reduced Pad Size and Improved Efficiency. Lubricants 2022, 10, 313. https://doi.org/10.3390/lubricants10110313

AMA Style

Hagemann T, Vetter D, Wettmarshausen S, Stottrop M, Engels A, Weißbacher C, Bender B, Schwarze H. A Design for High-Speed Journal Bearings with Reduced Pad Size and Improved Efficiency. Lubricants. 2022; 10(11):313. https://doi.org/10.3390/lubricants10110313

Chicago/Turabian Style

Hagemann, Thomas, Daniel Vetter, Sören Wettmarshausen, Michael Stottrop, Alexander Engels, Christoph Weißbacher, Beate Bender, and Hubert Schwarze. 2022. "A Design for High-Speed Journal Bearings with Reduced Pad Size and Improved Efficiency" Lubricants 10, no. 11: 313. https://doi.org/10.3390/lubricants10110313

APA Style

Hagemann, T., Vetter, D., Wettmarshausen, S., Stottrop, M., Engels, A., Weißbacher, C., Bender, B., & Schwarze, H. (2022). A Design for High-Speed Journal Bearings with Reduced Pad Size and Improved Efficiency. Lubricants, 10(11), 313. https://doi.org/10.3390/lubricants10110313

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop