CFD and experimental studies of room fire growth on wall lining materials |
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| Affiliation: | 1. Fire Research Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;2. USG Corporation, Libertyville, IL 60048, USA;3. State Key Laboratory of Fire Science, University of Science and Technology of China, Anhui 230026, China;1. School of Electrical Engineering, VIT University, Vellore 632014, Tami Nadu, India;2. Department of EEE, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India;3. Director/Research, Gaikwad Patil Group, Nagpur, India;1. Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Gyungbuk 37673, Republic of Korea;2. Korea Institute of Industrial Technology, Chungnam 31056, Republic of Korea;3. KEPCO Research Institute, Daejeon 34056, Republic of Korea;1. Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ 07030, USA;2. Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA;3. Highly Filled Materials Institute, Stevens Institute of Technology, Hoboken, NJ 07030, USA;4. Chemical Engineering Department, Selçuk University, Konya 42079, Turkey;1. Department of Biomedical Clinical and Experimental Sciences, University of Florence, Italy;2. Diabetology Unit, Careggi Hospital, Florence, Italy;1. Faculty of Chemistry and Petroleum Sciences, Department of Petroleum Chemistry and Catalysis, University of Shahid Beheshti, Tehran, P.O. Box 1983963113, Iran;2. Kosar University of Bojnord, Department of Applied Chemistry, North Khorasan, Iran |
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| Abstract: | CFD simulation and experimental tests have been carried out to study the room corner fire growth on combustible wall-lining materials. In the CFD simulation, the turbulent mass and heat transfer, and combustion were considered. The discrete transfer (DT) method was employed to calculate the radiation with an absorptivity and emissivity model employed to predict the radiation property of combustion products including soot, CO2 and H2O, which are usually the primary radiating species in the combustion of hydrocarbon fuels. The temperature of the solid boundary was determined by numerical solution of the heat conduction equation. A simple and practical pyrolysis model was developed to describe the response of the solid fuel. This pyrolysis model was first tested against the Cone Calorimeter data for both charring and non-charring materials under different irradiance levels and then coupled to CFD calculations. Both full and one-third scale room corner fire growths on particle board were modelled with CFD. The calculation was tested with various numbers of rays and grid sizes, showing that the present choice gives practically grid- and ray number-independent predictions. The heat release rate, wall surface temperature, char depth, gas temperature and radiation flux are compared with experimental measurements. The results are reasonable and the comparison between prediction and experiment is fairly good and promising. |
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