Detail publikace
CFD a MKP analýza kolektoru kotle
BUZÍK, J. NOVÁČEK, F. LOŠÁK, P.
Český název
CFD a MKP analýza kolektoru kotle
Anglický název
CFD and FEA Boiler Collector Analysis
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
This article presents a troubleshooting analysis of a steam boiler which serves for steam overheating. Operating of this boiler is accompanied by unexpected difficulties – repetitive crack occurring on a boilers collector (Figure 1). Therefore, the substantial part of this paper is focused on identifying of the main reason of damaging. The first step in damage identification was static, respective quasi-static FEM (finite element method) analyses. These analyses did not confirm the cause of damaging. Therefore, it was approached to analytical calculations (thermal – hydraulic and vibration calculations) which were used for additional boundary conditions estimation. The vibration analytical analyses predicted vortex excitation. The occurrence of vortex excitation behind the tube (Figure 6) was subsequently confirmed by CFD (computational fluid dynamics) and FSI (fluid structure interaction) analyses. These analyses revealed the cause of tube bundle damaging, which was fluid induced vibration. Significant part of this article is devoted to discussion about used computational models, boundary conditions and results of analyses. The last part of this article is targeted at proposing corrective action.
Český abstrakt
Článek se zaměřuje na odstanění závad vzniklích při provozování parního kolektoru. Toto provozování je doprovázeno opakujícím se výskytem trhlin na kolektoru kotle. Podstatná část článku je zaměřena na identifikaci hlavního důvodu poškození. Prvním krokem je identifikace poškození statickým působení tlaku a teplot. Následně je přistupováno k tepelně hydraulickému kontrolnímu výpočtu a CFD analýze. CFD analýza odhalila vznik vírových excitací za jednotlivými trubkami trubkového svazku. Značná část článku je věnována diskuzi o použitých vpočtových modelech, okrajových podmínkách a výsledcích jednotlivých analýz. Poslední část článku je zaměřena na navrhování nápravných opatření.
Anglický abstrakt
This article presents a troubleshooting analysis of a steam boiler which serves for steam overheating. Operating of this boiler is accompanied by unexpected difficulties – repetitive crack occurring on a boilers collector (Figure 1). Therefore, the substantial part of this paper is focused on identifying of the main reason of damaging. The first step in damage identification was static, respective quasi-static FEM (finite element method) analyses. These analyses did not confirm the cause of damaging. Therefore, it was approached to analytical calculations (thermal – hydraulic and vibration calculations) which were used for additional boundary conditions estimation. The vibration analytical analyses predicted vortex excitation. The occurrence of vortex excitation behind the tube (Figure 6) was subsequently confirmed by CFD (computational fluid dynamics) and FSI (fluid structure interaction) analyses. These analyses revealed the cause of tube bundle damaging, which was fluid induced vibration. Significant part of this article is devoted to discussion about used computational models, boundary conditions and results of analyses. The last part of this article is targeted at proposing corrective action.
Klíčová slova česky
kotel, trubkový svazek, MKP, CFD, metoda vzájemné interakce, vibrace, vibrace vyvolané prouděním
Klíčová slova anglicky
boiler, tube bundle, FEA, CFD, FSI, vibration, vortex induced vibration
Rok RIV
2014
Vydáno
23.08.2014
Nakladatel
Aidic Servizi S.r.l.
Místo
Milan, Italy
ISBN
978-88-95608-30-3
ISSN
2283-9216
Kniha
Proceedings of the 17th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction PRES 2014
Ročník
39
Strany od–do
847–852
Počet stran
6
BIBTEX
@inproceedings{BUT109519,
author="Jiří {Buzík} and Filip {Nováček} and Pavel {Lošák},
title="CFD and FEA Boiler Collector Analysis",
booktitle="Proceedings of the 17th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction PRES 2014",
year="2014",
volume="39",
month="August",
pages="847--852",
publisher="Aidic Servizi S.r.l.",
address="Milan, Italy",
isbn="978-88-95608-30-3",
issn="2283-9216"
}