Automated two-way coupling of CFD fire simulations to thermomechanical FE analyses at the overall structural level

J.A. Feenstra, H. Hofmeyer, R.A.P. van Herpen, M. Mahendran

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

Coupled CFD fire simulations and thermomechanical FE analyses typically consist of fire simulations, heat transfer analyses and structural response analyses, mutually coupled by three coupling steps. There are two coupling approaches, one-way and two-way coupling, where two-way coupling includes the effects of the structural response on fire propagation. In the first part of this paper, one- and two-way coupling approaches including the coupling steps are proposed to include coupling at the structural level. Then a case study comprising an office space with a 12-plate thin-walled steel façade under fire conditions is introduced, as well as the related CFD and FE models. A newly developed automated coupling interface and subprograms are used to perform several one-way and two-way coupled analyses using a coarse and fine CFD mesh for the case study. Slight differences are found in the results of identical simulations due to random effects in the fire simulations. Nevertheless, it can be concluded that two-way coupling is feasible, and that significant differences in the façade failure progression illustrate its effectiveness. Future research includes additional developments of both the fire and structural models, as well as verification and parametric studies to further confirm the findings.

Keywords
Fire safety;
Thermomechanical analyses;
CFD-FEM coupling;
Two-way coupling;
Adiabatic surface temperature
LanguageEnglish
Pages165-175
Number of pages11
JournalFire Safety Journal
Volume96
DOIs
StatePublished - 2018

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charge flow devices
Computational fluid dynamics
Fires
Facades
simulation
Steel
Heat transfer
Finite element method
thin plates
progressions
surface temperature
mesh
safety
heat transfer
steels
propagation
Temperature

Cite this

@article{35dbf097cd444cbea20d0fd41a9c3380,
title = "Automated two-way coupling of CFD fire simulations to thermomechanical FE analyses at the overall structural level",
abstract = "Coupled CFD fire simulations and thermomechanical FE analyses typically consist of fire simulations, heat transfer analyses and structural response analyses, mutually coupled by three coupling steps. There are two coupling approaches, one-way and two-way coupling, where two-way coupling includes the effects of the structural response on fire propagation. In the first part of this paper, one- and two-way coupling approaches including the coupling steps are proposed to include coupling at the structural level. Then a case study comprising an office space with a 12-plate thin-walled steel fa{\cc}ade under fire conditions is introduced, as well as the related CFD and FE models. A newly developed automated coupling interface and subprograms are used to perform several one-way and two-way coupled analyses using a coarse and fine CFD mesh for the case study. Slight differences are found in the results of identical simulations due to random effects in the fire simulations. Nevertheless, it can be concluded that two-way coupling is feasible, and that significant differences in the fa{\cc}ade failure progression illustrate its effectiveness. Future research includes additional developments of both the fire and structural models, as well as verification and parametric studies to further confirm the findings.KeywordsFire safety; Thermomechanical analyses; CFD-FEM coupling; Two-way coupling; Adiabatic surface temperature",
author = "J.A. Feenstra and H. Hofmeyer and {van Herpen}, R.A.P. and M. Mahendran",
year = "2018",
doi = "10.1016/j.firesaf.2017.11.007",
language = "English",
volume = "96",
pages = "165--175",
journal = "Fire Safety Journal",
issn = "0379-7112",
publisher = "Elsevier",

}

Automated two-way coupling of CFD fire simulations to thermomechanical FE analyses at the overall structural level. / Feenstra, J.A.; Hofmeyer, H.; van Herpen, R.A.P.; Mahendran, M.

In: Fire Safety Journal, Vol. 96, 2018, p. 165-175.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Automated two-way coupling of CFD fire simulations to thermomechanical FE analyses at the overall structural level

AU - Feenstra,J.A.

AU - Hofmeyer,H.

AU - van Herpen,R.A.P.

AU - Mahendran,M.

PY - 2018

Y1 - 2018

N2 - Coupled CFD fire simulations and thermomechanical FE analyses typically consist of fire simulations, heat transfer analyses and structural response analyses, mutually coupled by three coupling steps. There are two coupling approaches, one-way and two-way coupling, where two-way coupling includes the effects of the structural response on fire propagation. In the first part of this paper, one- and two-way coupling approaches including the coupling steps are proposed to include coupling at the structural level. Then a case study comprising an office space with a 12-plate thin-walled steel façade under fire conditions is introduced, as well as the related CFD and FE models. A newly developed automated coupling interface and subprograms are used to perform several one-way and two-way coupled analyses using a coarse and fine CFD mesh for the case study. Slight differences are found in the results of identical simulations due to random effects in the fire simulations. Nevertheless, it can be concluded that two-way coupling is feasible, and that significant differences in the façade failure progression illustrate its effectiveness. Future research includes additional developments of both the fire and structural models, as well as verification and parametric studies to further confirm the findings.KeywordsFire safety; Thermomechanical analyses; CFD-FEM coupling; Two-way coupling; Adiabatic surface temperature

AB - Coupled CFD fire simulations and thermomechanical FE analyses typically consist of fire simulations, heat transfer analyses and structural response analyses, mutually coupled by three coupling steps. There are two coupling approaches, one-way and two-way coupling, where two-way coupling includes the effects of the structural response on fire propagation. In the first part of this paper, one- and two-way coupling approaches including the coupling steps are proposed to include coupling at the structural level. Then a case study comprising an office space with a 12-plate thin-walled steel façade under fire conditions is introduced, as well as the related CFD and FE models. A newly developed automated coupling interface and subprograms are used to perform several one-way and two-way coupled analyses using a coarse and fine CFD mesh for the case study. Slight differences are found in the results of identical simulations due to random effects in the fire simulations. Nevertheless, it can be concluded that two-way coupling is feasible, and that significant differences in the façade failure progression illustrate its effectiveness. Future research includes additional developments of both the fire and structural models, as well as verification and parametric studies to further confirm the findings.KeywordsFire safety; Thermomechanical analyses; CFD-FEM coupling; Two-way coupling; Adiabatic surface temperature

U2 - 10.1016/j.firesaf.2017.11.007

DO - 10.1016/j.firesaf.2017.11.007

M3 - Article

VL - 96

SP - 165

EP - 175

JO - Fire Safety Journal

T2 - Fire Safety Journal

JF - Fire Safety Journal

SN - 0379-7112

ER -