Please use this identifier to cite or link to this item:
http://dx.doi.org/10.25673/85973
Title: | Influence of lubricant film cavitation on the rotor dynamic system behaviour of an exhaust gas turbocharger rotor |
Author(s): | Ziese, Christian Irmscher, Cornelius Woschke, Elmar |
Issue Date: | 2021 |
Type: | Article |
Language: | English |
URN: | urn:nbn:de:gbv:ma9:1-1981185920-879267 |
Subjects: | lubricant film cavitation Rotor dynamic system Gas turbocharger rotor |
Abstract: | The vibration behaviour of fast rotating rotors is significantly influenced by the bearing properties. Lubricant film induced excitations can cause sub-synchronous rotor oscillations known as oil-whirl and oil-whip phenomena. The non-linear bearing properties depend primarily on the lubricant properties, kinematics of bearing partners and especially on the occurrence of cavitation. Outgassing processes lead to a two-phase flow consisting of gas and oil, which can influence the bearing stiffness and damping respectively and consequently the rotor response behaviour. In this contribution, the oscillations of a semifloating ring supported turbocharger rotor are investigated under the influence of lubricant film cavitation. For this purpose, run-up simulations are carried out under the assumption of mass-conserving cavitation according to the two-phase model and compared with measurements. In order to illustrate the influence of outgassing processes, a comparison is made with non-mass-conserving cavitation theory according to the assumptions of Half-Sommerfeld. |
URI: | https://opendata.uni-halle.de//handle/1981185920/87926 http://dx.doi.org/10.25673/85973 |
Open Access: | Open access publication |
License: | (CC BY 4.0) Creative Commons Attribution 4.0 |
Sponsor/Funder: | Projekt DEAL 2020 |
Journal Title: | Proceedings in applied mathematics and mechanics |
Publisher: | Wiley-VCH |
Publisher Place: | Weinheim [u.a.] |
Volume: | 20 |
Issue: | 1 |
Original Publication: | 10.1002/pamm.202000053 |
Page Start: | 1 |
Page End: | 2 |
Appears in Collections: | Fakultät für Maschinenbau (OA) |
Files in This Item:
File | Description | Size | Format | |
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Ziese et al._Influence of lubricant_2021.pdf | Zweitveröffentlichung | 405.33 kB | Adobe PDF | View/Open |