CFD modelling of an initial powdery layer on cooled tubular surfaces

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F23%3APU148656" target="_blank" >RIV/00216305:26210/23:PU148656 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s00231-023-03390-8" target="_blank" >https://link.springer.com/article/10.1007/s00231-023-03390-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00231-023-03390-8" target="_blank" >10.1007/s00231-023-03390-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

CFD modelling of an initial powdery layer on cooled tubular surfaces

Popis výsledku v původním jazyce

Fouling in convective parts of boilers is typical of the deposition of solid particles and condensable inorganic vapours. Particle sticking is caused mainly by gravity, adhesion, or the presence of a sticky liquid film of condensed vapours. Aside from the local conditions, particle properties and size determine whether they are sticking on the surface. This work focuses on simulations of particulate matter fouling of cooled tubes by fly ash produced by the combustion of industrial waste and sewage sludge mixture. Boundary conditions including the flue gas and particle flow rate are derived from combustion tests. Particle properties and size distribution are obtained from literature. The goal is to provide a basis for further modelling of the development of large deposits in tube bundles observed during a test on the experimental facility. Neither the combustion nor fly ash development is modelled. Their transport and deposition are simulated. Fixed boundary conditions are set for both the particulate and gas phases. The influence of already deposited particles on the surface mechanical properties and roughness is included to capture their deposition. The fly ash particles are considered completely solidified, considering the low flue gas temperatures on the facility inlet.

Název v anglickém jazyce

CFD modelling of an initial powdery layer on cooled tubular surfaces

Popis výsledku anglicky

Fouling in convective parts of boilers is typical of the deposition of solid particles and condensable inorganic vapours. Particle sticking is caused mainly by gravity, adhesion, or the presence of a sticky liquid film of condensed vapours. Aside from the local conditions, particle properties and size determine whether they are sticking on the surface. This work focuses on simulations of particulate matter fouling of cooled tubes by fly ash produced by the combustion of industrial waste and sewage sludge mixture. Boundary conditions including the flue gas and particle flow rate are derived from combustion tests. Particle properties and size distribution are obtained from literature. The goal is to provide a basis for further modelling of the development of large deposits in tube bundles observed during a test on the experimental facility. Neither the combustion nor fly ash development is modelled. Their transport and deposition are simulated. Fixed boundary conditions are set for both the particulate and gas phases. The influence of already deposited particles on the surface mechanical properties and roughness is included to capture their deposition. The fly ash particles are considered completely solidified, considering the low flue gas temperatures on the facility inlet.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20300 - Mechanical engineering

Projekt

<a href="/cs/project/TN01000007" target="_blank" >TN01000007: Národní centrum pro energetiku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

HEAT AND MASS TRANSFER

ISSN

0947-7411

e-ISSN

1432-1181

Svazek periodika

60

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

807-815

Kód UT WoS článku

001020124200001

EID výsledku v databázi Scopus

2-s2.0-85163596198