Development of an Analytical Model to Determine the Heat Fluxes to a Structural Element Due to a Travelling Fire

Charlier, Marion; Franssen, Jean-Marc; Dumont, Fabien; Nadjai, Ali; Vassart, Olivier

doi:10.3390/app11199263

Open AccessArticle

Development of an Analytical Model to Determine the Heat Fluxes to a Structural Element Due to a Travelling Fire

by

Marion Charlier

^1,*

,

Jean-Marc Franssen

²,

Fabien Dumont

²,

Ali Nadjai

³ and

Olivier Vassart

⁴

¹

ArcelorMital Global R&D, Luxembourg, 66 rue de Luxembourg, 4221 Esch-sur-Alzette, Luxembourg

²

Department of Urban and Environment Engineering, Liège University, 4000 Liège, Belgium

³

FireSERT, Ulster University, Newtownabbey BT37 0QB, UK

⁴

ArcelorMittal Steligence, 4221 Esch-sur-Alzette, Luxembourg

^*

Author to whom correspondence should be addressed.

Appl. Sci. 2021, 11(19), 9263; https://doi.org/10.3390/app11199263

Submission received: 6 September 2021 / Revised: 20 September 2021 / Accepted: 22 September 2021 / Published: 6 October 2021

(This article belongs to the Special Issue New Challenges in Civil Structure for Fire Response)

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Abstract

The term “travelling fire” is used to label fires which burn locally and move across the floor over a period of time in large compartments. Through experimental and numerical campaigns and while observing the tragic travelling fire events, it became clear that such fires imply a transient heating of the surrounding structure. The necessity to better characterize the thermal impact generated on the structure by a travelling fire motivated the development of an analytical model allowing to capture, in a simple manner, the multidimensional transient heating of a structure considering the effect of the ventilation. This paper first presents the basic assumptions of a new analytical model which is based on the virtual solid flame concept; a comparison of the steel temperatures measured during a travelling fire test in a steel-framed building with the ones obtained analytically is then presented. The limitations inherent to the analyticity of the model are also discussed. This paper suggests that the developed analytical model can allow for both an acceptable representation of the travelling fire in terms of fire spread and steel temperatures while not being computationally demanding, making it potentially desirable for pre-design.

Keywords: travelling fire; analytical model; steel structures; heat fluxes; structural fire engineering

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MDPI and ACS Style

Charlier, M.; Franssen, J.-M.; Dumont, F.; Nadjai, A.; Vassart, O. Development of an Analytical Model to Determine the Heat Fluxes to a Structural Element Due to a Travelling Fire. Appl. Sci. 2021, 11, 9263. https://doi.org/10.3390/app11199263

AMA Style

Charlier M, Franssen J-M, Dumont F, Nadjai A, Vassart O. Development of an Analytical Model to Determine the Heat Fluxes to a Structural Element Due to a Travelling Fire. Applied Sciences. 2021; 11(19):9263. https://doi.org/10.3390/app11199263

Chicago/Turabian Style

Charlier, Marion, Jean-Marc Franssen, Fabien Dumont, Ali Nadjai, and Olivier Vassart. 2021. "Development of an Analytical Model to Determine the Heat Fluxes to a Structural Element Due to a Travelling Fire" Applied Sciences 11, no. 19: 9263. https://doi.org/10.3390/app11199263

APA Style

Charlier, M., Franssen, J.-M., Dumont, F., Nadjai, A., & Vassart, O. (2021). Development of an Analytical Model to Determine the Heat Fluxes to a Structural Element Due to a Travelling Fire. Applied Sciences, 11(19), 9263. https://doi.org/10.3390/app11199263

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Development of an Analytical Model to Determine the Heat Fluxes to a Structural Element Due to a Travelling Fire

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