Damage of the boiler collector caused by vibration

Kód výsledku v 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>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Damage of the boiler collector caused by vibration

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Damage of the boiler collector caused by vibration

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

JQ - Strojní zařízení a nástroje

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Book of extended abstracts 30th conference with international participation Computational Mechanics 2014

ISBN

978-80-261-0429-2

ISSN

—

e-ISSN

—

Počet stran výsledku

2

Strana od-do

11-12

Název nakladatele

University of West Bohemia

Místo vydání

Plzeň

Místo konání akce

špičák

Datum konání akce

3. 11. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—