000911556 001__ 911556
000911556 005__ 20221201131205.0
000911556 037__ $$aFZJ-2022-04816
000911556 041__ $$aEnglish
000911556 1001_ $$0P:(DE-Juel1)186603$$aBörger, Kristian$$b0$$ufzj
000911556 1112_ $$aFire and Evacuation Modeling Technical Conference (FEMTC) 2022$$cBrno$$d2022-09-12 - 2022-09-14$$wCzech Republic
000911556 245__ $$aInvestigation of smoke characteristics by photometric measurements
000911556 260__ $$c2022
000911556 300__ $$a14
000911556 3367_ $$2ORCID$$aCONFERENCE_PAPER
000911556 3367_ $$033$$2EndNote$$aConference Paper
000911556 3367_ $$2BibTeX$$aINPROCEEDINGS
000911556 3367_ $$2DRIVER$$aconferenceObject
000911556 3367_ $$2DataCite$$aOutput Types/Conference Paper
000911556 3367_ $$0PUB:(DE-HGF)8$$2PUB:(DE-HGF)$$aContribution to a conference proceedings$$bcontrib$$mcontrib$$s1669880097_22308
000911556 520__ $$aVisibility in case of fire can be predicted from CFD simulations as a major tenability criterion within the scope of performance-based safety concepts. Indications that light extinction might be significantly overestimated by numerical fire models [McGrattan, 2022] have been confirmed by experimental investigations and simulations [Arnold, 2021] with the Fire Dynamics Simulator (FDS). For this purpose, a novel photometric approach was applied in the context of EN 54 [EN54, 2002] test fires among established measurement methods for the determination of spatial and temporal resolved light extinction coefficients. Common DSLR cameras capture the relative change in the intensity of individual light sources (LEDs) due to fire smoke. Based on geometrical optics as well as the Beer-Lambert’s law, an inverse model deduces local values of the extinction coefficient, assuming a homogeneous smoke layering. Both, the quality, and the scope of the experimental setup have been incrementally optimized and extended. Potential sources of error were examined, such as temperature-related effects on the LEDs’ intensity. Besides the spatial resolution of the smoke density, the focus of recent investigations is on the in-depth smoke characteristics. For this reason, light obscuration was assessed at multiple wavelengths. Furthermore, aging of aerosols was analyzed by measuring the change in particle size distribution at different heights of the smoke layering. This paper introduces an innovative approach for the acquisition of reliable data to validate the prediction of smoke propagation by numerical fire models. The extensive dataset of the latest investigation covers n-heptane pool fires as well as wood smoldering fires according to EN 54.
000911556 536__ $$0G:(DE-HGF)POF4-5111$$a5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511)$$cPOF4-511$$fPOF IV$$x0
000911556 536__ $$0G:(DE-Juel1)PHD-NO-GRANT-20170405$$aPhD no Grant - Doktorand ohne besondere Förderung (PHD-NO-GRANT-20170405)$$cPHD-NO-GRANT-20170405$$x1
000911556 7001_ $$0P:(DE-Juel1)138417$$aBelt, Alexander$$b1
000911556 7001_ $$0P:(DE-Juel1)188103$$aKandler, Alica$$b2
000911556 7001_ $$0P:(DE-HGF)0$$aSchultze, Thorsten$$b3
000911556 7001_ $$0P:(DE-Juel1)132044$$aArnold, Lukas$$b4$$eCorresponding author
000911556 8564_ $$uhttps://files.thunderheadeng.com/femtc/2022_d1-14-borger-paper.pdf
000911556 909CO $$ooai:juser.fz-juelich.de:911556$$pVDB
000911556 9101_ $$0I:(DE-HGF)0$$6P:(DE-Juel1)186603$$a Bergische Universität Wuppertal$$b0
000911556 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)138417$$aForschungszentrum Jülich$$b1$$kFZJ
000911556 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)188103$$aForschungszentrum Jülich$$b2$$kFZJ
000911556 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$aUniversität Duisburg-Essen$$b3
000911556 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)132044$$aForschungszentrum Jülich$$b4$$kFZJ
000911556 9131_ $$0G:(DE-HGF)POF4-511$$1G:(DE-HGF)POF4-510$$2G:(DE-HGF)POF4-500$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-5111$$aDE-HGF$$bKey Technologies$$lEngineering Digital Futures – Supercomputing, Data Management and Information Security for Knowledge and Action$$vEnabling Computational- & Data-Intensive Science and Engineering$$x0
000911556 9141_ $$y2022
000911556 920__ $$lyes
000911556 9201_ $$0I:(DE-Juel1)IAS-7-20180321$$kIAS-7$$lZivile Sicherheitsforschung$$x0
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