Damage of the boiler collector caused by vibration

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU113256" target="_blank" >RIV/00216305:26210/14:PU113256 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Damage of the boiler collector caused by vibration
Original language description
This contribution is devoted to searching of the damage causes to the boiler collector, which is periodically damaged between nozzles of collector. Thus, the place between the boiler nozzles was analysed by FEM (finite element method) which showed the damage is not caused by static (respectively quasi-static) strain. Based on these results, CFD (computational fluid dynamics) analyses was performed on the tube bundle. This analyses revealed formation of vortex excitations behind the tubes. In the processof formation of these cracks are involved more together linked factors. This contribution is devoted to find importance of the tube bundle support on the cracks formation. It is expected that the formation of these cracks is caused by vortex excitations. These vortex excitations may lead to tube vibration. Real cracks on the collector is forms with period 4 to 5 years and frequency of vortex excitation is circa 7 to 20 Hz.
Czech name
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Czech description
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Book of extended abstracts 30th conference with international participation Computational Mechanics 2014
ISBN
978-80-261-0429-2
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
11-12
Publisher name
University of West Bohemia
Place of publication
Plzeň
Event location
špičák
Event date
Nov 3, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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