Heat Release Rates of Burning Items in Fires

Kim, Hyeong-Jin; Lilley, David G.

doi:10.2514/2.6011

Cited by 50 publications

(23 citation statements)

References 4 publications

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“…High radiation heat transfer levels from the original burning item, the flame and plume directly above it, and the hot smoke layer spreading across the ceiling are all considered to be responsible for the heating of the other items, leading to their ignition. Factors affecting flashover include enclosure size, ceiling and wall conductivity and flammability, and heat-and smoke-producing quality of enclosure contents [48].…”

Section: Cases Of Flashovermentioning

confidence: 99%

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Prediction of Smoke Propagation in a Big Multi-Story Building Using Fire Dynamics Simulator (FDS)

Gawad¹,

Ghulman²

2015

AJEE

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In the present work, the computational fluid dynamics (CFD) technique was used to predict the fire dynamics in a big three-story building. Important aspects of fire dynamics were investigated such as smoke propagation and temperature distribution. The study aims to decrease the fire hazards by computationally predicting the expected smoke movement in reallife conditions. Consequently, early evacuation plans can be established to save human lives by proper estimation of the smoke direction and density. Also, temperature rise has a potential effect on the safety of both humans and structures. Different factors were considered such as fire location, doors, and emergency openings. Important findings and notable conclusions are recorded.

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Section: Cases Of Flashovermentioning

confidence: 99%

“…These signs include heat build-up and "rollover". Rollover means small, sporadic flashes of flame that appear near ceiling level or at the top open doorways of smoke-filled enclosures [48].…”

Section: Cases Of Flashovermentioning

confidence: 99%

Prediction of Smoke Propagation in a Big Multi-Story Building Using Fire Dynamics Simulator (FDS)

Gawad¹,

Ghulman²

2015

AJEE

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“…따라서 화재 시뮬레이션의 입력조 건은 특정 화재시나리오의 거동을 잘 나타낼 수 있어야하 고 이러한 입력조건을 일반적으로 디자인 화재곡선(Design fire curve)이라 한다. 디자인 화재곡선은 주로 화재거동을 잘 나타내는 열발생률(Heat release rate, HRR)곡선 형태로 제안 (3)(4)(5) 된 바 있고 본 연구그룹에서도 화재성장곡선이 두 개의 화재성장률로 피팅(Fitting)되는 디자인 화재곡선을 제 안하고 다양한 연료의 화재에 대해 예측성능을 검토한 바 있다 (6)(7)(8) .…”

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Evaluation of the Prediction of B-RISK-FDS-Coupled Simulations for Multi-Combustible Fire Behavior in a Compartment

Baek¹,

Oh²

2019

Fire Sci. Eng

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요 약구획실 내 가연물들의 화재거동에 대한 B-RISK의 예측성능을 Fire dynamics simulator (FDS)와 연계하여 검토하였 다. 먼저 열발생률(Heat release rate, HRR)에 ABSTRACTThe prediction performance of B-RISK was evaluated for the fire behaviors of combustibles in a compartment using Fire Dynamics Simulator (FDS). First of all, to predict the heat release rate (HRR) for two combustible sets, the HRR for one combustible set and the design fire curve were used as input values for B-RISK. Comparing results of B-RISK calculations with experimental data for two combustible sets, it was found that B-RISK results predicted insufficiently for fire growth rate of experimental data but there was good agreement for maximum HRR and total HRR with the experimental data. And the B-RISK results were used for input values of FDS to evaluate the fire behaviors of B-RISK results. Comparing results of FDS calculations with experimental data, the simulation results showed that the temperature and concentrations of O 2 , CO 2 in the fire growth phase were different from the experimental data. However, when using the B-RISK result for percentile 70%, the simulation results sufficiently predicted the overall fire behaviors.

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“…The growth constants ( and ) and examples of typical combustibles in each category are given in Table 2. The decay phase of a fire can also be represented by a t 2 curve with appropriate decay constants [15,17].…”

Section: Pre-flashover Design Firesmentioning

confidence: 99%

“…The growth coefficient is sometimes determined using experimental data, as demonstrated by Kim and Lilley [15].…”

Section: Pre-flashover Design Firesmentioning

confidence: 99%

An Overview of Design Fires for Building Compartments

Bwalya

2008

Fire Technol

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1007/s10694-007-0031-7Fire Technology, pp. 167-184, 2008-06-01 An Overview of design fires for building compartments Bwalya, A. C.http://irc.nrc-cnrc.gc.ca An overview of design fires for building compartments NRCC-47655Bwalya, A.C.A version of this document is published in / Une version de ce document se trouve dans: Fire Technology, v. 44, no. 2, June 2008, pp. 167-184 doi: http://dx.doi.org/10.1007/s10694-007-0031-7The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. This literature review was carried out to determine the range of methods used to characterize design fires. The methods currently available were found to be largely empirical in nature and unsophisticated. The two main quantities used to describe design fires are the heat release rate (pre-flashover scenario) and temperature-time profiles (post-flashover). The most widely used pre-flashover design fires are t 2 fires, whereas a host of empirical correlations are available for post-flashover design fires.

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Heat Release Rates of Burning Items in Fires

Cited by 50 publications

References 4 publications

Prediction of Smoke Propagation in a Big Multi-Story Building Using Fire Dynamics Simulator (FDS)

Prediction of Smoke Propagation in a Big Multi-Story Building Using Fire Dynamics Simulator (FDS)

Evaluation of the Prediction of B-RISK-FDS-Coupled Simulations for Multi-Combustible Fire Behavior in a Compartment

An Overview of Design Fires for Building Compartments

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