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| Hauptseite > Publikationsdatenbank > IR-Based Analysis of Flame Spread in Open and Ceilinged Room Corner Fire Experiments |
| Contribution to a conference proceedings | FZJ-2025-05693 |
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2025
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Please use a persistent id in citations: doi:10.34734/FZJ-2025-05693
Abstract: Three different room corner experiments (RCE) with 6mm thick poly(methyl methacrylate) (PMMA) panels were carried out in this study. The set-up is located under an exhaust hood and is closed to three sides with brick walls so that air is only entrained via one side. To ensure symmetrical flow conditions, the walls of the RCE were rotated by 45◦ relative to the room walls and the RCE setup was placed in the middle of the room. As an ignition source, a 10kW sandbed burner was used. Two open 1m high RCE configurations and one closed, where an inert calcium silicate ceiling was used, are investigated. In one of the open RCE configurations, the burner was turned off after 2 minutes, to investigate flame spread close to the corner not being dominated by the burner. By including a ceiling, the effect of the radiation feedback is investigated. All experiments were repeated at least three times. Among other measurements, two infrared cameras were used to track the flame front. An in-house software was developed for the IR-based flame front analysis, which will be publicly available. The heat release rate and the temperature measurements between the sample material and the insulation, show a very good repeatability. Furthermore, the analysis of both the IR data and the temperatures shows symmetrical behavior between both PMMA plates. It is shown that the ceiling has a strong impact on the flame spread pattern and velocity, the velocity is more than doubled compared to the open RCE configuration. Whereas the effect of turning off the burner for the open room corner is minor, only a small delay in heat release rate is observed.
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