Fire behaviour of gypsum plasterboard wall assemblies: CFD simulation of a full-scale residential building

Dionysios Kolaitis, Eleni Asimakopoulou, Maria Founti

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Gypsum “dehydration” phenomena, occurring when gypsum plasterboard wall assemblies are exposed to a high temperature environment, result in water vapour production and subsequent dispersion in the fire compartment; these phenomena are often neglected in relevant Computational Fluid Dynamics (CFD) simulations. Aiming to investigate the impact of gypsum dehydration in full-scale CFD simulations of lightweight drywall buildings, the FDS code is used to simulate a two-storey residential building, exposed to a typical domestic fire scenario. The building employs a structural steel frame combined with gypsum plasterboard wall assemblies. Temperature-dependent thermo-physical properties are used for all construction materials. The effects of gypsum dehydration are assessed by using two alternative modelling approaches, an effective specific heat model and a solid reaction kinetics model; the obtained predictions are compared to a benchmark test case, where no such phenomena are modelled. The obtained results demonstrate that when the highly endothermic gypsum dehydration phenomena are simulated, lower overall heat release rates, gas and wall surface temperatures are predicted. In addition, the developed solid reaction kinetics model allows, for the first time, quantitative predictions of gypsum dehydration induced water vapour production and dispersion phenomena.
LanguageEnglish
Pages23-35
JournalCase Studies in Fire Safety
Volume7
Early online date29 Nov 2016
DOIs
Publication statusPublished - May 2017

Fingerprint

residential building
Gypsum
Computational fluid dynamics
Fires
Dehydration
simulation
heat
Computer simulation
water
building
Reaction kinetics
Water vapor
scenario
Temperature
Specific heat
Thermodynamic properties
Steel
Gases

Keywords

  • Fire
  • Gypsum plasterboard
  • Gypsum dehydration
  • Solid reaction kinetics
  • Effective specific heat
  • Drywall system
  • Multi-compartment fire

Cite this

@article{400ad51afbd44a20a4ca0ab919fdea50,
title = "Fire behaviour of gypsum plasterboard wall assemblies: CFD simulation of a full-scale residential building",
abstract = "Gypsum “dehydration” phenomena, occurring when gypsum plasterboard wall assemblies are exposed to a high temperature environment, result in water vapour production and subsequent dispersion in the fire compartment; these phenomena are often neglected in relevant Computational Fluid Dynamics (CFD) simulations. Aiming to investigate the impact of gypsum dehydration in full-scale CFD simulations of lightweight drywall buildings, the FDS code is used to simulate a two-storey residential building, exposed to a typical domestic fire scenario. The building employs a structural steel frame combined with gypsum plasterboard wall assemblies. Temperature-dependent thermo-physical properties are used for all construction materials. The effects of gypsum dehydration are assessed by using two alternative modelling approaches, an effective specific heat model and a solid reaction kinetics model; the obtained predictions are compared to a benchmark test case, where no such phenomena are modelled. The obtained results demonstrate that when the highly endothermic gypsum dehydration phenomena are simulated, lower overall heat release rates, gas and wall surface temperatures are predicted. In addition, the developed solid reaction kinetics model allows, for the first time, quantitative predictions of gypsum dehydration induced water vapour production and dispersion phenomena.",
keywords = "Fire, Gypsum plasterboard, Gypsum dehydration, Solid reaction kinetics, Effective specific heat, Drywall system, Multi-compartment fire",
author = "Dionysios Kolaitis and Eleni Asimakopoulou and Maria Founti",
note = "New member of staff, joined Ulster University on 1 February 2017",
year = "2017",
month = "5",
doi = "10.1016/j.csfs.2016.11.001",
language = "English",
volume = "7",
pages = "23--35",
journal = "Case Studies in Fire Safety",
issn = "2214-398X",
publisher = "Elsevier",

}

Fire behaviour of gypsum plasterboard wall assemblies: CFD simulation of a full-scale residential building. / Kolaitis, Dionysios; Asimakopoulou, Eleni; Founti, Maria.

In: Case Studies in Fire Safety, Vol. 7, 05.2017, p. 23-35.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Fire behaviour of gypsum plasterboard wall assemblies: CFD simulation of a full-scale residential building

AU - Kolaitis, Dionysios

AU - Asimakopoulou, Eleni

AU - Founti, Maria

N1 - New member of staff, joined Ulster University on 1 February 2017

PY - 2017/5

Y1 - 2017/5

N2 - Gypsum “dehydration” phenomena, occurring when gypsum plasterboard wall assemblies are exposed to a high temperature environment, result in water vapour production and subsequent dispersion in the fire compartment; these phenomena are often neglected in relevant Computational Fluid Dynamics (CFD) simulations. Aiming to investigate the impact of gypsum dehydration in full-scale CFD simulations of lightweight drywall buildings, the FDS code is used to simulate a two-storey residential building, exposed to a typical domestic fire scenario. The building employs a structural steel frame combined with gypsum plasterboard wall assemblies. Temperature-dependent thermo-physical properties are used for all construction materials. The effects of gypsum dehydration are assessed by using two alternative modelling approaches, an effective specific heat model and a solid reaction kinetics model; the obtained predictions are compared to a benchmark test case, where no such phenomena are modelled. The obtained results demonstrate that when the highly endothermic gypsum dehydration phenomena are simulated, lower overall heat release rates, gas and wall surface temperatures are predicted. In addition, the developed solid reaction kinetics model allows, for the first time, quantitative predictions of gypsum dehydration induced water vapour production and dispersion phenomena.

AB - Gypsum “dehydration” phenomena, occurring when gypsum plasterboard wall assemblies are exposed to a high temperature environment, result in water vapour production and subsequent dispersion in the fire compartment; these phenomena are often neglected in relevant Computational Fluid Dynamics (CFD) simulations. Aiming to investigate the impact of gypsum dehydration in full-scale CFD simulations of lightweight drywall buildings, the FDS code is used to simulate a two-storey residential building, exposed to a typical domestic fire scenario. The building employs a structural steel frame combined with gypsum plasterboard wall assemblies. Temperature-dependent thermo-physical properties are used for all construction materials. The effects of gypsum dehydration are assessed by using two alternative modelling approaches, an effective specific heat model and a solid reaction kinetics model; the obtained predictions are compared to a benchmark test case, where no such phenomena are modelled. The obtained results demonstrate that when the highly endothermic gypsum dehydration phenomena are simulated, lower overall heat release rates, gas and wall surface temperatures are predicted. In addition, the developed solid reaction kinetics model allows, for the first time, quantitative predictions of gypsum dehydration induced water vapour production and dispersion phenomena.

KW - Fire

KW - Gypsum plasterboard

KW - Gypsum dehydration

KW - Solid reaction kinetics

KW - Effective specific heat

KW - Drywall system

KW - Multi-compartment fire

U2 - 10.1016/j.csfs.2016.11.001

DO - 10.1016/j.csfs.2016.11.001

M3 - Article

VL - 7

SP - 23

EP - 35

JO - Case Studies in Fire Safety

T2 - Case Studies in Fire Safety

JF - Case Studies in Fire Safety

SN - 2214-398X

ER -