Abstract
The input parameters of the Heskestad and Cleary models—which are numerical models included in fire dynamics simulator (FDS)—are measured, and a sensitivity analysis is conducted on the effects of individual and common input parameters of the numerical models on the detection time. The input parameters are applied to the FDS, and the results predicted the activation time of the detector within +5 s. Compared to the individual input parameters, the obscuration per meter (OPM), which is a common input parameter, significantly affected the detection time. Finally, additional input parameters that correspond to combustion properties, such as the soot yield and mass specific extinction coefficient, are discovered to have a greater impact on the detection time than the input parameters in the detector’s numerical models. Considering various smoke detectors and combustibles, this study’s findings will contribute to the efficient use of resources to build a database of input parameters.
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This work was supported by the National Fire Agency of Korea through the field-based firefighting activity supporting technology development project (MPSS-Fire Safety-2015-66).
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Recommended by Editor Yong Tae Kang
Hyo-Yeon Jang received a Master’s degree of Fire and Disaster Prevention from Daejeon University. She had worked as a researcher at Korea Fire Institute and currently works as a Post-Graduate Researcher at Daejeon University, South Korea. Her major research interests include validation of numerical models of smoke and heat detectors and construction of input parameter DB for reliable fire simulation.
Cheol-Hong Hwang received a Ph.D. degree of Mechanical Engineering from the Inha University, Korea in 2006. He currently works as an Associate Professor in the Department of Fire & Disaster Prevention at Daejeon University, South Korea. His major research interests include combustion and fire dynamics related to the understanding of fundamental phenomena and their practical applications.
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Jang, HY., Hwang, CH. Methodology for DB construction of input parameters in FDS-based prediction models of smoke detector. J Mech Sci Technol 34, 5327–5337 (2020). https://doi.org/10.1007/s12206-020-1133-0
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DOI: https://doi.org/10.1007/s12206-020-1133-0