Simplified radiation modeling of pool fires

Fire Physics - Promises, Problems, And Progress

“…A considerable literature on pool fires is available (37,67,(85)(86)(87)(88) (74,92). Descriptions of pyrolysis rates and flame shapes for practical systems are listed under Fire in the cummulative subject indices of the International Symposia on Combustion (93,94).…”

“…Efficient application to practical fires is the problem. Orloff (87) suggests an effective radiation flame temperature of 1260 K for small pool fires. The mean beam length approach appears to suffice for physical path calculations (95)(96)(97) and soot is the primary radiator (95)(96)(97)(98)(99).…”

Calculating flame spread on horizontal and vertical surfaces

“…(23) at t = t end (27) The time stretching parameter, G, ensures that the scaled burnout time is similar for the similar materials. G is given by eq (25) within the domain shown in eqs (23)- (24 The cone calorimeter data of heat and mass release versus time for a typical fabric/foam cushion at three irradiance levels are shown in Figure 4a and Figure 5a The prediction of the local bum history in this model can be explained by using eqs (18) to (27) as follows. The integral in eq (22) is evaluated with a trapezoidal numerical integration to produce the scaled data in Figure 4b and Figure 5b.…”

“…Therefore, the approximations to Sj g 7 , S; Sj, and g M , the surface-gas, surface-surface and gas layer to gas layer respectively, are To achieve greater accuracy in the vicinity of the flame base region, l K y and 6 U 7 have been modified to correlate with advanced thermal radiation calculations for regions 31 Calculating Flame Spread on Horizontal and Vertical Surfaces around a conical fru strum, [25], [26] and [27] Figure 8. In this figure, DR, BR, and HR are along x, y, z axes respectively.…”

The Needed Fire Science

“…Although considerable effort has been expended (73,74,81,82,86,122,123,131) we are a long way from understanding the full process of flame combustion. All of the quantities required for fire modeling, soot production, radiation, fraction of heat release, residual unburned fuel and toxic products are now obtained from incomplete (for this purpose) experimental results (138).…”