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Numerical and experimental investigation of the toxicity and light extinction of fire smoke using experimental data from fire tests of polymers

  • The Fractional Effective Dose model was used to predict the fire smoke toxicity numerically. In this context fire tests were carried out for three different building materials: polyurethane, flame retardant polyurethane and polyvinyl chloride. The fire tests were performed for flaming and smoldering combustion. The aim of the fire tests was to determine the light extinction, the smoke density and the combustion products at varying oxygen concentrations, different temperatures and different irradiance levels. The fire tests were performed in the German DIN-tube and also in the Cone Calorimeter. Stoichiometric coefficients at varying oxygen concentrations and temperatures were determined from measurements. With these stoichiometric coefficients reaction equations were defined and implemented in the Computational Fluid Dynamics (CFD) program, ANSYS CFX. The implemented reaction equations were used to account for different ventilation and temperature conditions in the simulation. The fireThe Fractional Effective Dose model was used to predict the fire smoke toxicity numerically. In this context fire tests were carried out for three different building materials: polyurethane, flame retardant polyurethane and polyvinyl chloride. The fire tests were performed for flaming and smoldering combustion. The aim of the fire tests was to determine the light extinction, the smoke density and the combustion products at varying oxygen concentrations, different temperatures and different irradiance levels. The fire tests were performed in the German DIN-tube and also in the Cone Calorimeter. Stoichiometric coefficients at varying oxygen concentrations and temperatures were determined from measurements. With these stoichiometric coefficients reaction equations were defined and implemented in the Computational Fluid Dynamics (CFD) program, ANSYS CFX. The implemented reaction equations were used to account for different ventilation and temperature conditions in the simulation. The fire and smoke propagation was calculated numerically with CFD in the room corner test geometry. Equations to account for toxicity and light extinction were also implemented and were used to analyse the toxicity and the optical properties of fire smoke with CFD.zeige mehrzeige weniger

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Metadaten
Autor*innen:Andrea Löhnert, Nils Monreal, Christian Knaust, U. Krause
Persönliche Herausgeber*innen:A. Zingoni
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Research and applications in structural engineering, mechanics and computation - 5th International conference on structural engineering, mechanics and computation (Proceedings)
Jahr der Erstveröffentlichung:2013
Verlag:CRC Press
Erste Seite:2003
Letzte Seite:2008
Veranstaltung:Research and applications in structural engineering, mechanics and computation - 5th International conference on structural engineering, mechanics and computation
Veranstaltungsort:Cape Town, South Africa
Beginndatum der Veranstaltung:02.09.2013
Enddatum der Veranstaltung:04.09.2013
ISBN:978-1-138-00061-2
ISBN:978-1-315-85078-8
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Nein
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