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

^*Corresponding author for this work

Institute of Thermodynamics and Sustainable Propulsion Systems (3130)

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

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

Original language	English
Title of host publication	11th International Conference Tunnel Safety and Ventilation
Editors	Peter-Johann Sturm
Place of Publication	Graz
Publisher	Verlag der Technischen Universität Graz
Pages	144
Number of pages	154
ISBN (Electronic)	978-3-85125-884-4
ISBN (Print)	978-3-85125-883-7
DOIs	https://doi.org/10.3217/978-3-85125-883-7-17
Publication status	Published - 15 May 2022
Event	11th International Conference on Tunnel Safety and Ventilation - Graz, Graz, Austria Duration: 9 May 2022 → 10 May 2022 https://tunnel-graz.at/ http://ww.tunnel-graz.at

Publication series

Name	ITnA-Reports
Publisher	Helmut Eichlseder
Volume	Vol 105

Conference

Conference	11th International Conference on Tunnel Safety and Ventilation
Country/Territory	Austria
City	Graz
Period	9/05/22 → 10/05/22
Internet address	https://tunnel-graz.at/ http://ww.tunnel-graz.at

Keywords

risk assessment
FDS
CFD
Tunnel fire
Simulation

ASJC Scopus subject areas

Safety, Risk, Reliability and Quality

Fields of Expertise

Mobility & Production

Treatment code (Nähere Zuordnung)

Application

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

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

Cite this

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 . ed. / Peter-Johann Sturm. Graz: Verlag der Technischen Universität Graz, 2022. p. 144 (ITnA-Reports; Vol. Vol 105).

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

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 (ed.), 11th International Conference Tunnel Safety and Ventilation . ITnA-Reports, vol. Vol 105, Verlag der Technischen Universität Graz, Graz, pp. 144, 11th International Conference on Tunnel Safety and Ventilation, Graz, Austria, 9/05/22. https://doi.org/10.3217/978-3-85125-883-7-17

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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

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

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Fields of Expertise

Treatment code (Nähere Zuordnung)

UN SDGs

Access to Document

Fingerprint

Cite this