Analysis and validation of CFD simulations for flow in the large power station flue gas system

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F24%3A43973882" target="_blank" >RIV/49777513:23640/24:43973882 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.epj-conferences.org/articles/epjconf/abs/2024/09/epjconf_efm2024_01025/epjconf_efm2024_01025.html" target="_blank" >https://www.epj-conferences.org/articles/epjconf/abs/2024/09/epjconf_efm2024_01025/epjconf_efm2024_01025.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/202429901025" target="_blank" >10.1051/epjconf/202429901025</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Analysis and validation of CFD simulations for flow in the large power station flue gas system

Popis výsledku v původním jazyce

This paper deals with complex CFD simulations of flows in the flue gas system of a large power plant during operation. The aim of the published results is to present generalising knowledge obtained from complex simulations in the power station and show aspects for relevant modelling of large real systems. The computational models covered the flue gas system between the boiler and the flue gas fan. The CFD simulations were run in more model modifications and the results were used to evaluate the distribution of velocities, temperatures and solid pollutants. Relatively unique complex measurement allowed to validate the results of the simulations. The comparison of simulated and measured velocity profile in the large vertical channel with internal beam reinforcement system shows satisfactory agreement. The CFD model of the Ljungström-type air preheater at various rotation speed was used for prediction of the temperature distribution before the six electrostatic precipitators. Computed distribution of flow-rates on inlets and outlets of electrostatic precipitators were also validated by measurement. Based on good agreement was made a study of setting the outlet flap valves for balancing of flow-rates. The setting was satisfactory validated again. The results of study have shown that CFD simulations can be deployed even on large-sized flue gas pipelines with sufficient reliability if important parameters are respected.

Název v anglickém jazyce

Analysis and validation of CFD simulations for flow in the large power station flue gas system

Popis výsledku anglicky

This paper deals with complex CFD simulations of flows in the flue gas system of a large power plant during operation. The aim of the published results is to present generalising knowledge obtained from complex simulations in the power station and show aspects for relevant modelling of large real systems. The computational models covered the flue gas system between the boiler and the flue gas fan. The CFD simulations were run in more model modifications and the results were used to evaluate the distribution of velocities, temperatures and solid pollutants. Relatively unique complex measurement allowed to validate the results of the simulations. The comparison of simulated and measured velocity profile in the large vertical channel with internal beam reinforcement system shows satisfactory agreement. The CFD model of the Ljungström-type air preheater at various rotation speed was used for prediction of the temperature distribution before the six electrostatic precipitators. Computed distribution of flow-rates on inlets and outlets of electrostatic precipitators were also validated by measurement. Based on good agreement was made a study of setting the outlet flap valves for balancing of flow-rates. The setting was satisfactory validated again. The results of study have shown that CFD simulations can be deployed even on large-sized flue gas pipelines with sufficient reliability if important parameters are respected.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

EPJ Web of Conferences: EFM22 – Experimental Fluid Mechanics 2022

ISBN

—

ISSN

2101-6275

e-ISSN

2100-014X

Počet stran výsledku

12

Strana od-do

—

Název nakladatele

EDP Sciences

Místo vydání

Neuveden

Místo konání akce

Dvůr Králové nad Labem

Datum konání akce

29. 11. 2022

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—