| Title: | Predicting the total wall time of CFD simulations of single-compartment fires |
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| Authors: | ID Veit, Martin (Author)
ID Lucherini, Andrea (Author)
ID Maragkos, Georgios (Author)
ID Merci, Bart (Author) |
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| Files: |  URL - Source URL, visit https://iopscience.iop.org/article/10.1088/1742-6596/2885/1/012100/pdf
 PDF - Presentation file, download (1,21 MB)
MD5: 3ED3CCD6506D89A52FD0DC8C162843A2
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| Language: | English |
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| Typology: | 1.08 - Published Scientific Conference Contribution |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| 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. |
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| Keywords: | simulations, computational fluid dynamics, fire dynamics simulator, wall time |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.11.2024 |
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| Publisher: | Institute of Physics Publishing |
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| Year of publishing: | 2024 |
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| Number of pages: | Str. 1-6 |
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| PID: | 20.500.12556/DiRROS-21074  |
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| UDC: | 53 |
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| ISSN on article: | 1742-6596 |
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| DOI: | 10.1088/1742-6596/2885/1/012100 |
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| COBISS.SI-ID: | 219028227 |
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| Copyright: | © authors, 2024 |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 13. 12. 2024;
Št. prispevka: 012100;
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| Publication date in DiRROS: | 19.12.2024 |
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| Views: | 36 |
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| Downloads: | 13 |
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| Metadata: |    |
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