Experimental and Numerical Analysis of Fire Development in Compartment Fires with Immobile Fire Load
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The paper reports on an experimental test series on enclosure fire dynamics for compartments with combustible surfaces and different ventilation openings. The tests were carried out in a test room according ISO 9705-1 to analyse the fire behaviour of compartment fires with unprotected or initially protected timber surfaces. The conducted compartment fire tests showed the impact of different parameters on the fire development of timber structures with exposed and initially protected surfaces, such as the influence of the ventilation conditions, the amount and positions of the exposed timber surfaces and the heat release of the fire source. Furthermore, post-combustion fire behaviour and auto-extinction (as well as the extinguishing measures) were investigated. Based on the experimental data, a numerical analysis, is presented with the CFD-Software Fire Dynamics Simulator, focussing on different approaches for considering the contribution of exposed timber. First results of the numerical analysis demonstrate two promising modelling approaches, which need further investigations.
KeywordsCompartment fire Timber Immobile fire load
This joint research project is funded by the Federal Ministry of Food and Agriculture (BMEL) via the project management agency Fachagentur Nachwachsende Rohstoffe e. V. (Agency for Renewable Resources). (FNR). Co-financing of the timber industry is coordinated by the State Guild Association of Bavarian Carpenters.
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