Thermal radiation solid-flame model

The solid-flame model can be used to overcome the inaccuracy of the point-source model. This model assumes that the fire can be represented by a solid body of a simple geometrical shape, and that all thermal radiation is emitted from its surface. To ensure that fire volume is not neglected, the geometries of the fire and target, as well as their relative positions, must be taken into account because a portion of the fire may be obscured as seen from the target. 

Solid plume radiation model A thermal radiation model that assumes that the entire visable volume of the flame emits thermal radiation, and the non-visable gases do not. 

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