Publication result detail

Damage of the boiler collector caused by vibration

BUZÍK, J.

Original Title

Damage of the boiler collector caused by vibration

English Title

Damage of the boiler collector caused by vibration

Type

Paper in proceedings (conference paper)

Original Abstract

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 process of 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.

English abstract

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 process of 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.

Keywords

fluid induced vibration, vortex excitation, boiler

Key words in English

fluid induced vibration, vortex excitation, boiler

Authors

BUZÍK, J.

Released

04.11.2014

Publisher

University of West Bohemia

Location

Plzeň

ISBN

978-80-261-0429-2

Book

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

Pages from

11

Pages to

12

Pages count

2

BibTex

@inproceedings{BUT113299,
  author="Jiří {Buzík}",
  title="Damage of the boiler collector caused by vibration",
  booktitle="Book of extended abstracts 30th conference with international participation Computational Mechanics 2014",
  year="2014",
  pages="11--12",
  publisher="University of West Bohemia",
  address="Plzeň",
  isbn="978-80-261-0429-2"
}