FOR: J. Palmer from NIST (National Institute of Standards and Technology).
This case models a fire a a three dimensional room with one door and partitions. Supply and return vents are located below the ceiling. The room dimensions are 28'(length) by 21'(width) by 9.5'(height). The partitions are 6' high and 6" wide. The dimensions of the supply and return vents were 3'*1'.
Boundary conditions and sources:
The inflow through the supply vents is 0.5 kg/s, coming at a temperature of 15 degrees C, and the return vents extracts 0.4 kg/s.
The open door is set as fixed pressure boundary condition (relative to hydrostatic). The temperature of air entering form outside is also set to 15 degrees C.
The fire was modelled as heat source, uniformly distributed over a volume (30cm*30cm*30cm), releasing 70 kW.
The flow was simulated as turbulent using the 2-equation k-epsilon model.
Buoyancy was taken into account using the Boussinesq approximation.
The temperature contour scale has been set to 15-150 degrees C, to enable variations within the room to be viewed. The red band also includes temperatures above 150 degrees C, up to a maximum of 500 degrees C in the fire.
Temperature contours are given at different height if the room, showing
the average temperature in the plane increasing with the height, and also
the peak of temperature above the fire.