Reduction of the energy losses by application of controllable squeeze film dampers

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00474716" target="_blank" >RIV/61388998:_____/17:00474716 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27230/17:10237783 RIV/61989100:27740/17:10237783
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Reduction of the energy losses by application of controllable squeeze film dampers
Original language description
The unbalance induces lateral oscillations of rotors and forces transmitted to the rotor casing. The squeeze film dampers with integrated rolling element bearings represent a technological solution, which enables to reduce their magnitude, and consequently the resistance against the rotor rotation. To achieve optimum performance of the damping devices, their damping effect must be adapable to the current rotor speed. This paper reports a proposal of a controllable squeeze film damper, the damping effect of which is controlled mechanically by shifting its outer ring in the axial direction. The developed mathematical model of the damper is based on assumptions of the classical theory of lubrication and is completed with implementation of a gas cavitation. The results of the computational simulations show that an appropriate control of the damping force enables to reduce the energy losses in a wide range of operating speeds.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Engineering Mechanics 2017
ISBN
978-80-214-5497-2
ISSN
1805-8248
e-ISSN
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Number of pages
4
Pages from-to
1110-1113
Publisher name
University of technology, Institute of Solid Mechanics, Mechatronics and Biomechanics
Place of publication
Brno
Event location
Svratka
Event date
May 15, 2017
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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