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Abstract
A numerical finite-volume procedure for predicting the fire environment in enclosures containing internal solid regions (e.g., internal obstacles, islands, barriers, and partitions) is reported. The blocking-off operation is extended to fire models. In this procedure, the main advantage is to use a calculation domain that includes both the fluid and the solid regions. It consists of modifying the coefficient definitions in the discretized form of the transport equations. A special emphasis is put on the fluid energy equation where the conjugate heat transfer problem at the fluid/solid interface is solved. A modified blocked-off discrete ordinates method is used to solve the radiative transfer equation. Sample examples areshown to prove its efficiency. As an example of the use of the general procedure, thephysical problem solved is that of a large compartment with a partition and a soffit. Forthis simulation, the thermal responses of the partition/soffit structural elements are predicted.
