On the accuracy of FDS smoke propagation models in the context of tunnel risk analyses

Oliver Heger; Peter-Johann Sturm

doi:10.3217/978-3-85125-883-7-17

On the accuracy of FDS smoke propagation models in the context of tunnel risk analyses

Oliver Heger^*, Peter-Johann Sturm

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Thermodynamik und nachhaltige Antriebssysteme (3130)

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband › Begutachtung

Abstract

In the recent past the Fire Dynamics Simulator (FDS) has become one of the primary tools for fire- and smoke propagation simulation in the context of tunnel fire safety. FDS has been extensively validated for compartment fires but validation for tunnels is scarce. After a quantitative validation against a full scale fire test is presented, the paper demonstrates how specific numerical options, in particular the size of the CFD mesh, influence the accuracy of the smoke propagation results. By doing so the investigated FDS modelling concepts are related to achievable prediction accuracies as well as the expected computation times. This will allow informed decisions on the choice of model characteristics based on the necessary accuracy and available computing resources in future consequence analysis of tunnel fires, typically used in tunnel risk models

Originalsprache	englisch
Titel	11th International Conference Tunnel Safety and Ventilation
Redakteure/-innen	Peter-Johann Sturm
Erscheinungsort	Graz
Herausgeber (Verlag)	Verlag der Technischen Universität Graz
Seiten	144
Seitenumfang	154
ISBN (elektronisch)	978-3-85125-884-4
ISBN (Print)	978-3-85125-883-7
DOIs	https://doi.org/10.3217/978-3-85125-883-7-17
Publikationsstatus	Veröffentlicht - 15 Mai 2022
Veranstaltung	11th International Conference on Tunnel Safety and Ventilation - Graz, Graz, Österreich Dauer: 9 Mai 2022 → 10 Mai 2022 https://tunnel-graz.at/ http://ww.tunnel-graz.at

Publikationsreihe

Name	ITnA-Reports
Herausgeber (Verlag)	Helmut Eichlseder
Band	Vol 105

Konferenz

Konferenz	11th International Conference on Tunnel Safety and Ventilation
Land/Gebiet	Österreich
Ort	Graz
Zeitraum	9/05/22 → 10/05/22
Internetadresse	https://tunnel-graz.at/ http://ww.tunnel-graz.at

ASJC Scopus subject areas

Sicherheit, Risiko, Zuverlässigkeit und Qualität

Fields of Expertise

Mobility & Production

Treatment code (Nähere Zuordnung)

Application

UN SDGs

Dieser Output leistet einen Beitrag zu folgendem(n) Ziel(en) für nachhaltige Entwicklung

Zugriff auf Dokument

10.3217/978-3-85125-883-7-17Lizenz: CC BY-NC 4.0

Dieses zitieren

On the accuracy of FDS smoke propagation models in the context of tunnel risk analyses. / Heger, Oliver; Sturm, Peter-Johann.
11th International Conference Tunnel Safety and Ventilation . Hrsg. / Peter-Johann Sturm. Graz: Verlag der Technischen Universität Graz, 2022. S. 144 (ITnA-Reports; Band Vol 105).

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband › Begutachtung

Heger, O & Sturm, P-J 2022, On the accuracy of FDS smoke propagation models in the context of tunnel risk analyses. in P-J Sturm (Hrsg.), 11th International Conference Tunnel Safety and Ventilation . ITnA-Reports, Bd. Vol 105, Verlag der Technischen Universität Graz, Graz, S. 144, 11th International Conference on Tunnel Safety and Ventilation, Graz, Österreich, 9/05/22. https://doi.org/10.3217/978-3-85125-883-7-17

@inproceedings{08d2ab585bcf427c8ac826800c5072c3,

title = "On the accuracy of FDS smoke propagation models in the context of tunnel risk analyses",

abstract = "In the recent past the Fire Dynamics Simulator (FDS) has become one of the primary tools for fire- and smoke propagation simulation in the context of tunnel fire safety. FDS has been extensively validated for compartment fires but validation for tunnels is scarce. After a quantitative validation against a full scale fire test is presented, the paper demonstrates how specific numerical options, in particular the size of the CFD mesh, influence the accuracy of the smoke propagation results. By doing so the investigated FDS modelling concepts are related to achievable prediction accuracies as well as the expected computation times. This will allow informed decisions on the choice of model characteristics based on the necessary accuracy and available computing resources in future consequence analysis of tunnel fires, typically used in tunnel risk models",

keywords = "risk assessment, FDS, CFD, Tunnel fire, Simulation",

author = "Oliver Heger and Peter-Johann Sturm",

year = "2022",

month = may,

day = "15",

doi = "10.3217/978-3-85125-883-7-17",

language = "English",

isbn = "978-3-85125-883-7",

series = "ITnA-Reports",

publisher = "Verlag der Technischen Universit{\"a}t Graz",

pages = "144",

editor = "Peter-Johann Sturm",

booktitle = "11th International Conference Tunnel Safety and Ventilation",

note = "11th International Conference on Tunnel Safety and Ventilation ; Conference date: 09-05-2022 Through 10-05-2022",

url = "https://tunnel-graz.at/, http://ww.tunnel-graz.at",

}

TY - GEN

T1 - On the accuracy of FDS smoke propagation models in the context of tunnel risk analyses

AU - Heger, Oliver

AU - Sturm, Peter-Johann

PY - 2022/5/15

Y1 - 2022/5/15

N2 - In the recent past the Fire Dynamics Simulator (FDS) has become one of the primary tools for fire- and smoke propagation simulation in the context of tunnel fire safety. FDS has been extensively validated for compartment fires but validation for tunnels is scarce. After a quantitative validation against a full scale fire test is presented, the paper demonstrates how specific numerical options, in particular the size of the CFD mesh, influence the accuracy of the smoke propagation results. By doing so the investigated FDS modelling concepts are related to achievable prediction accuracies as well as the expected computation times. This will allow informed decisions on the choice of model characteristics based on the necessary accuracy and available computing resources in future consequence analysis of tunnel fires, typically used in tunnel risk models

AB - In the recent past the Fire Dynamics Simulator (FDS) has become one of the primary tools for fire- and smoke propagation simulation in the context of tunnel fire safety. FDS has been extensively validated for compartment fires but validation for tunnels is scarce. After a quantitative validation against a full scale fire test is presented, the paper demonstrates how specific numerical options, in particular the size of the CFD mesh, influence the accuracy of the smoke propagation results. By doing so the investigated FDS modelling concepts are related to achievable prediction accuracies as well as the expected computation times. This will allow informed decisions on the choice of model characteristics based on the necessary accuracy and available computing resources in future consequence analysis of tunnel fires, typically used in tunnel risk models

KW - risk assessment

KW - FDS

KW - CFD

KW - Tunnel fire

KW - Simulation

U2 - 10.3217/978-3-85125-883-7-17

DO - 10.3217/978-3-85125-883-7-17

M3 - Conference paper

SN - 978-3-85125-883-7

T3 - ITnA-Reports

SP - 144

BT - 11th International Conference Tunnel Safety and Ventilation

A2 - Sturm, Peter-Johann

PB - Verlag der Technischen Universität Graz

CY - Graz

T2 - 11th International Conference on Tunnel Safety and Ventilation

Y2 - 9 May 2022 through 10 May 2022

ER -