A methodology is presented for computing the spread of fire effects such as heat, smoke, and other combustion products between rooms in a multi-room fire scenario. The methodology extends the Harvard Computer Fire Code V for computing the dynamic history of a fire in a single room to connecting rooms by adding the appropriate flow physics. Finally, an example is presented where an object is burning in a room which is connected to a second room via a door way. The evolution of the hot layer and vent flows are discussed, and compared to the same evolution of a single room structure.
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