CFD modelling of an initial powdery layer on cooled tubular surfaces

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
CFD modelling of an initial powdery layer on cooled tubular surfaces
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20300 - Mechanical engineering

Project
<a href="/en/project/TN01000007" target="_blank" >TN01000007: National Centre for Energy</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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