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Naslov:Numerical heat transfer model for swelling intumescent coatings during heating
Avtorji:ID Lucherini, Andrea (Avtor)
ID Hidalgo, Juan P. (Avtor)
ID Torero, Jose L. (Avtor)
ID Maluk, Cristian (Avtor)
Datoteke:URL URL - Izvorni URL, za dostop obiščite https://www.sciencedirect.com/science/article/abs/pii/S1290072922004501
 
.pdf PDF - Predstavitvena datoteka, prenos (1,21 MB)
MD5: 6CCC70841683EF7CBC443A6833203164
 
Jezik:Angleški jezik
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:Logo ZAG - Zavod za gradbeništvo Slovenije
Povzetek:This research study presents a heat transfer model aimed at estimating the thermal and physical response of intumescent coatings. The numerical model is inspired by the outcomes of an experimental study focused on analysing the insulating effectiveness of a commercial intumescent coating for a range of heating conditions and initial coating thickness. The model solves the one-dimensional heat conduction problem using the finite-difference Crank-Nicolson method, and it assumes that the effectiveness of intumescent coatings is mainly dependent on their ability to develop swelled porous char. The coating swelling is implemented in the model by adopting an approach based on expanding the mesh representing the physical domain in proximity to the substrate-coating interface. The model described herein offers researchers and engineers a tool to estimate the heat transfer of swelling intumescent coatings (i.e. in-depth thermal gradient). Outcomes of the analysis shown herein demonstrate that the heat conduction within intumescent coatings is governed by the physical coating swelling and the thermal conditions at the coating-substrate interface. The numerical model shows that its accuracy is highly influenced by the coating thickness ahead of the reaction zone. Consequently, the coating swelling rate plays a key role, while the thermo-physical properties of the intumescent coating have a secondary effect. According to its assumptions, the model defines a quasi-steady-state thermal problem: it is more accurate for conditions close to steady-state (e.g. high heat fluxes), but it loses accuracy for cases characterised by transient phenomena (e.g. phases prior to the onset of swelling and low heat fluxes).
Ključne besede:intumescent coatings, heat transfer, numerical model, swelling, fire safety
Status publikacije:Objavljeno
Verzija publikacije:Recenzirani rokopis
Datum objave:28.09.2022
Založnik:Elsevier
Leto izida:2023
Št. strani:str. 1-13
Številčenje:Vol. 184
PID:20.500.12556/DiRROS-17648 Novo okno
UDK:620.1/.2
ISSN pri članku:1290-0729
DOI:10.1016/j.ijthermalsci.2022.107922 Novo okno
COBISS.SI-ID:125555715 Novo okno
Avtorske pravice:© 2022 Elsevier Ltd. All rights reserved
Opomba:Št. članka: 107922;
Datum objave v DiRROS:08.01.2024
Število ogledov:955
Število prenosov:197
Metapodatki:XML DC-XML DC-RDF
:
LUCHERINI, Andrea, HIDALGO, Juan P., TORERO, Jose L. in MALUK, Cristian, 2023, Numerical heat transfer model for swelling intumescent coatings during heating. International journal of thermal sciences [na spletu]. 2023. Vol. 184, p. 1–13. [Dostopano 9 april 2025]. DOI 10.1016/j.ijthermalsci.2022.107922. Pridobljeno s: https://dirros.openscience.si/IzpisGradiva.php?lang=slv&id=17648
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Gradivo je del revije

Naslov:International journal of thermal sciences
Skrajšan naslov:Int. j. therm. sci.
Založnik:Elsevier
ISSN:1290-0729
COBISS.SI-ID:3258651 Novo okno

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:intumescentni premazi, prenos toplote, numerični model, nabrekanje, požarna varnost


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