A correlation for predicting smoke layer temperature in a room adjacent to a room involved in a pre‐flashover fire

Johansson, Nils; Hees, Patrick Van

doi:10.1002/fam.2172

Cited by 16 publications

(12 citation statements)

References 16 publications

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“…(3)) similar to the MQH correlation, developed by Johansson and van Hees [10], makes it possible to estimate the HGL temperature for a given HRR in a adjacent room connected to the room of fire origin as illustrated in Fig. 1.…”

Section: Methods 1 -Empirical Modelsmentioning

confidence: 99%

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An evaluation of two methods to predict temperatures in multi-room compartment fires

Johansson

Svensson

Hees

2015

Fire Safety Journal

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Section: Methods 1 -Empirical Modelsmentioning

confidence: 99%

“…It could be to get an estimate of the conditions for evacuees in an escape way adjacent to the room of fire origin or the heat exposure to components (e.g. cables and electronics) in an adjacent room [10].…”

Section: δ =̇( )mentioning

confidence: 99%

An evaluation of two methods to predict temperatures in multi-room compartment fires

Johansson

Svensson

Hees

2015

Fire Safety Journal

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“…Moreover, they also analyzed the influence of different transverse fire locations and sidewall restriction on the maximum ceiling smoke temperature. Johansson and Hees [17] developed a correlation based on the results from computer simulations that predicted gas temperatures in a room adjacent to a room involved in a pre-flashover fire. The external validity was studied by comparing the correlation results with full-scale test data.…”

Section: Introductionmentioning

confidence: 99%

Scaled Experimental Study on Maximum Smoke Temperature along Corridors Subject to Room Fires

et al. 2015

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Abstract:In room-corridor building geometry, the corridor smoke temperature is of great importance to fire protection engineering as indoor fires occur. Theoretical analysis and a set of reduced-scale model experiments were performed, and a virtual fire model was proposed, to investigate the correlations between the maximum smoke temperature in corridors and the smoke temperature in rooms. The results show that the dimensionless virtual fire heat release rate (HRR) is characterized by quadratic-polynomial of the dimensionless smoke temperature in fire rooms. The dimensionless distance from a virtual fire source to the corridor ceiling varies linearly with the dimensionless smoke temperature in a room. Results of multiple regression indicate that, at the impingement area of virtual fire, the dimensionless maximum smoke temperature in corridors is only related to the dimensionless virtual fire HRR; in the non-impingement area of a virtual fire, the dimensionless maximum smoke temperature in corridors is a function of the dimensionless virtual fire HRR and dimensionless longitude distance. The viscosity and conduction exhibit an insignificant impact on the maximum temperature in the corridor. Through replacing the parameters of virtual fire with the dimensionless smoke temperature in fire rooms, the correlations between dimensionless maximum temperature in corridors and the dimensionless smoke temperature in fire rooms were proposed. OPEN ACCESSSustainability 2015, 7 11191

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“…by Bowman et al (1993), and lately there are also examples of the term being used in fire science (Chow and Zou 2005;Tilley et al 2012;Johansson and van Hees 2014). However, there is, to the knowledge of the author, no established definition or description of numerical experiment in field of fire science.…”

Section: What Is a Numerical Experiment?mentioning

confidence: 99%

“…a best fit to data was done without much consideration of the physical meaning of the derived formula. But, Johansson and van Hees (2014) did, as mentioned, compare the formula with some experiments and that is considered curial when using this type of approach.…”

Section: Examples Of Numerical Experiments In Fire Sciencementioning

confidence: 99%

Numerical experiments and compartment fires

Johansson

2014

Fire Sci Rev

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Fires are complex and it is hard to derive relationships from theory in fire science. Full-scale and small-scale experiments have been used with great success in order to increase the understanding of fire chemistry and fire dynamics. An alternative or complement to these often expensive and resource demanding traditional experiments are numerical experiments. In this paper, numerical experiments are reviewed as a research method and put into the context of traditional compartment fire experiments. Benefits and challenges with numerical experiments compared to traditional compartment fire experiments are presented and discussed in this paper. Numerical experiments are a promising method in fire science research. However, it is currently not considered satisfying to solely use a numerical experiment to study a certain fire phenomena. Different experimental methods should not be regarded as competitive but as complementary, and a combination of traditional and numerical experimental methods are in many cases appropriate in order to analysis a certain fire phenomena.

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A correlation for predicting smoke layer temperature in a room adjacent to a room involved in a pre‐flashover fire

Cited by 16 publications

References 16 publications

An evaluation of two methods to predict temperatures in multi-room compartment fires

An evaluation of two methods to predict temperatures in multi-room compartment fires

Scaled Experimental Study on Maximum Smoke Temperature along Corridors Subject to Room Fires

Numerical experiments and compartment fires

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