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Adiabatic surface temperature: a sufficient input data for a thermal model
LTU and Brandskyddslaget AB, Karlstad.
LTU and SP Technical Research Institute, Borås.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0003-4791-2341
2009 (English)In: Application of Structural Fire Engineering: Proceedings of the International Conference / [ed] František Wald; Petra Kallerová; Jiří Chlouba, České vysoké učení technické v Praze Česká technika – nakladatelství ČVUT , 2009, p. 102-Conference paper, Published paper (Refereed)
Abstract [en]

Two computational models are used in this paper to predict structural performance in fire: A fire model created using a numerical code based on Computation Fluid Dynamic (CFD). The model predicts the development of a fire and the heat flux in a fire compartment with a simple geometry consisting of solid objects for the purpose of estimating their temperature. A thermal/structural model using numerical software based on the Finite Element Method. The model predicts structural behaviour based on "effective gas temperature", which is denoted adiabatic surface temperature. This temperature may be obtained either from fire modelling or from measurements. An important question is which parameter values from the fire model are required to transfer information at the gas-solid interface. A thorough and common understanding of heat transfer to structural elements of a building is very important for realistic prediction of the temperature and resistance of structural components. Researchers and test standard developers have different ways of expressing and measuring the various forms of convective and radiative heat flux. The net heat flux to a surface computed by a fire model is often seen as a valuable information to be used in thermal/structural model to perform detailed heat transfer calculation within the structural elements. However the net heat flux calculated in the fire model depends on the corresponding surface temperature and is therefore limited to be used in thermal calculations only with the same structural geometry as used in the fire model.

Place, publisher, year, edition, pages
České vysoké učení technické v Praze Česká technika – nakladatelství ČVUT , 2009. p. 102-
National Category
Building Technologies
Research subject
Steel Structures
Identifiers
URN: urn:nbn:se:ltu:diva-32380Local ID: 6df6e0a0-00da-11de-a8bd-000ea68e967bISBN: 978-80-01-04266-3 (print)OAI: oai:DiVA.org:ltu-32380DiVA, id: diva2:1005614
Conference
Applications of Structural Fire Engineering : 19/02/2009 - 20/02/2009
Note
Godkänd; 2009; 20090222 (milan)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-06-08Bibliographically approved

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Veljkovic, Milan

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