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Points out that several computer programs are available to simulate airflows caused by the operation of smoke control systems, but they cannot always obtain a solution. So that an improved program could be developed, four different algorithms that are frequently used for solving pipe network problems were implemented in separate programs, which were evaluated using various smoke control system and building types to select the best algorithm. Finds that, based on convergence reliability, speed, accuracy, memory requirements, ease of use and flexibility, the best algorithm was the simultaneous node method. The program implementing that method was then implemented to include all the capabilities required for the analysis of smoke control systems. Compares its airflow and pressure predictions to those of another smoke control analysis program for several cases. Finds excellent agreement in each case.

KEYWORDS: Computer programs, algorithms, comparing, smoke ventilation, selecting.