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Title:Predicting the total wall time of CFD simulations of single-compartment fires
Authors:ID Veit, Martin (Author)
ID Lucherini, Andrea (Author)
ID Maragkos, Georgios (Author)
ID Merci, Bart (Author)
Files:URL URL - Source URL, visit https://iopscience.iop.org/article/10.1088/1742-6596/2885/1/012100/pdf
 
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MD5: 3ED3CCD6506D89A52FD0DC8C162843A2
 
Language:English
Typology:1.08 - Published Scientific Conference Contribution
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:The total wall time is often difficult to predict a priori in compartment fire simulations due to dynamic phenomena that can occur, e.g., flame extinction. The wall time is dependent on multiple physical factors in the simulation, along with simulation factors and the system used to compute the model. Specifically, the CFL number of a simulation is highly influential to the wall time, as this restricts the time step size. In this paper, the prediction of the total wall time for a single-compartment fire is investigated considering varying fire heat release rates and compartment ventilation factors. It is shown that an increasing heat release rate increases the total wall time due to higher velocities inside the compartment. Furthermore, when the compartment becomes under-ventilated, the wall time becomes more difficult to predict early on in the simulation, as steady state conditions are reached later, compared to well-ventilated cases. The time at which the wall time can be accurately predicted changed from a few physical seconds in the well-ventilated case, to up to 60 physical seconds for the under-ventilated case.
Keywords:simulations, computational fluid dynamics, fire dynamics simulator, wall time
Publication status:Published
Publication version:Version of Record
Publication date:01.11.2024
Publisher:Institute of Physics Publishing
Year of publishing:2024
Number of pages:Str. 1-6
PID:20.500.12556/DiRROS-21074 New window
UDC:53
ISSN on article:1742-6596
DOI:10.1088/1742-6596/2885/1/012100 New window
COBISS.SI-ID:219028227 New window
Copyright:© authors, 2024
Note:Nasl. z nasl. zaslona; Opis vira z dne 13. 12. 2024; Št. prispevka: 012100;
Publication date in DiRROS:19.12.2024
Views:194
Downloads:104
Metadata:XML DC-XML DC-RDF
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VEIT, Martin, LUCHERINI, Andrea, MARAGKOS, Georgios and MERCI, Bart, 2024, Predicting the total wall time of CFD simulations of single-compartment fires. In : 4th European Symposium on Fire Safety Science [online]. Published Scientific Conference Contribution. Institute of Physics Publishing. 2024. p. 1–6. [Accessed 7 April 2025]. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=21074
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Record is a part of a proceedings

Title:4th European Symposium on Fire Safety Science
COBISS.SI-ID:219018755 New window

Record is a part of a journal

Title:Journal of physics : Conference series
Publisher:Institute of Physics Publishing
ISSN:1742-6596
COBISS.SI-ID:2035044 New window

Document is financed by a project

Funder:EC - European Commission
Funding programme:H2020
Project number:952395
Name:Fire-safe Sustainable Built Environment
Acronym:FRISSBE

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Keywords:simulacije, računalniška dinamika tekočin, simulator požarne dinamike, stenski čas


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