Abstract
The recent developments in high speed micro rotating machinery lead to the need for multiphysical
modeling of the rotor and the surrounding medium. In this study, thermal and flow induced effects on
rotor dynamics of geometries with moderate flow confinement are studied. The structure is modeled via
finite elements based on Timoshenko beams. Flow induced forces are implemented to the structure as
added mass, stiffness and damping at each node. The temperature increase in the air gap, resulting from air
friction is modeled via thermal networks in steady state as a function of rotation speed. The changed
temperature affects the air properties and therefore the flow induced forces have to be recalculated. In this
way, thermal and fluid effects in medium gap confinements are coupled with the rotordynamic model and
their effects on critical speeds and vibration response can be investigated
Original language | English |
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Title of host publication | Proceedings of ISMA2008 |
Subtitle of host publication | International Conference on Noise and Vibration Engineering |
Editors | P. Sas, B. Bergen |
Place of Publication | Leuven |
Publisher | Katholieke Universiteit Leuven |
Pages | 1055-1062 |
ISBN (Print) | 978 9073802865 |
Publication status | Published - 2008 |
Event | 2008 International Conference on Noise and Vibration Engineering, ISMA 2008 - Leuven, Belgium Duration: 15 Sept 2008 → 17 Sept 2008 http://past.isma-isaac.be/isma2008 |
Conference
Conference | 2008 International Conference on Noise and Vibration Engineering, ISMA 2008 |
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Abbreviated title | ISMA |
Country/Territory | Belgium |
City | Leuven |
Period | 15/09/08 → 17/09/08 |
Internet address |
Keywords
- METIS-255812
- IR-79016