Fire dynamics in open compartments

Piloto, P.A.G.; Possoli, Ketlen; Junior, Luiz C.M.; Nechab, Khadouma; Benarous, Abdallah

Publication

Fire dynamics in open compartments

2018Conference paper

dc.contributor.author	Piloto, P.A.G.
dc.contributor.author	Possoli, Ketlen
dc.contributor.author	Junior, Luiz C.M.
dc.contributor.author	Nechab, Khadouma
dc.contributor.author	Benarous, Abdallah
dc.date.accessioned	2020-04-17T08:36:18Z
dc.date.available	2020-04-17T08:36:18Z
dc.date.issued	2018
dc.description.abstract	With the aim to increase fire safety in open compartments, such as open car parks, some correlative models were used to test the ability to recover both dynamics and thermal characteristics of a ceiling-jet flow. The heat flow, coming from a burning vehicle, occurs when the fire plume impinges the ceiling and develops in the radial direction of the fire axis. Both temperature and velocity predictions are decisive for sprinklers positioning, fire alarms positions, detectors (heat, smoke) position and activation times and back-layering predictions. This investigation deals with a parametric analysis using different fire events (class of the vehicle) and two fire scenarios. Some correlative formulations were used: Alpert, Cooper, Heskestad & Delichatsios and Motevalli & Marks. An advance calculation method (CFAST) based on a two-zone model formulation was used to compare the results, as well as the CFD software ANSYS Fluent, based on the finite volume method. A total of 16 simulation results were obtained taking into consideration 2 different heights for the compartment (H=3m and H=5m), 4 different car classes (fire events), 6 radial positions (R) and two software (CFAST and ANSYS Fluent). The correlative model from Motevalli & Marks overestimates the dynamic characteristics in small compartments. The two zone model overestimates the maximum temperature in the biggest compartment and the CFD results for temperature and velocity are always higher than the other calculation methods.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Piloto, P.A.G.; Possoli, Ketlen; Junior, Luiz C.M.; Nechab, Khadouma; Benarous, Abdallah (2018). Fire dynamics in open compartments. In 6th International Conference on Integrity-Reliability-Failure (IRF). Lisbon	pt_PT
dc.identifier.isbn	978-989-20-8313-1
dc.identifier.uri	http://hdl.handle.net/10198/21697
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Open car parks	pt_PT
dc.subject	Ceiling jet	pt_PT
dc.subject	Correlative models	pt_PT
dc.subject	Two zone models (CFAST)	pt_PT
dc.subject	Field models (ANSYS Fluent)	pt_PT
dc.title	Fire dynamics in open compartments	pt_PT
dc.type	conference paper
dspace.entity.type	Publication
oaire.citation.conferencePlace	Lisbon	pt_PT
oaire.citation.endPage	672	pt_PT
oaire.citation.startPage	663	pt_PT
oaire.citation.title	6th International Conference on Integrity-Reliability-Failure (IRF)	pt_PT
person.familyName	Piloto
person.givenName	Paulo A.G.
person.identifier.ciencia-id	0519-449D-6F13
person.identifier.orcid	0000-0003-2834-0501
person.identifier.rid	B-4866-2008
person.identifier.scopus-author-id	6506406159
rcaap.rights	restrictedAccess	pt_PT
rcaap.type	conferenceObject	pt_PT
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