Thermal models of a flame arrester
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      "To increase the capability to predict the effectiveness of a flame arrester in the cooling of hot combustion gases expelled through a flame arrester, the U.S. Bureau of Mines developed an equilibrium model and one- and three-dimensional transient thermal models of a flame arrester, which were used to predict the temperature evolution within the arrester and the maximum temperature at the external surface of the arrester. The models account for convective and conductive heat transport within the arrester and radiative losses at the exit surface. The gas flow through the arrester is established from an empirically derived relationship between the gas velocity and the pressure gradient across the arrester. Lateral heat loss from the arrester to the enclosure wall is accounted for in the three-dimensional model. The model calculations for maximum outside surface temperature of the arrester showed an approximate agreement with measured values for vent-area-to-enclosure-volume ratios between 12 and 28 in2.Ft-3." - NIOSHTIC-2 NIOSHTIC no. 10010782
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