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Visit the latest version of the PyroSim User Manual for reference throughout this tutorial.If you haven’t already, get a free 30-day trial license.Download and install the latest version of PyroSim from the PyroSim Support Page.Findings of this study will be helpful in the assessment of fire risk in the RMG buildings in Bangladesh and would enable to suggest design measures to control the propagation of fire and smoke and improve tenability, thus minimizing the life and property damages. The available safety egress time is found to be small unless the smoke migration ismitigated by the use of fire doors and other smoke management techniques. From the point of view of an efficient evacuation process, the conditions in the 1 st floor are found to be the most critical as fire and dense smoke surround the escape routes with a high degree of visibility reduction within 2 min. It is found that within 3 min of the initiation of the fire, fire-smoke spreads very rapidly through the hallways and stairways and completely blocks the escape routes of the building. The source of the fire is considered to be the fabric storage of the ground floor andnylon, a commonly used fiber in the RMG industries with a high heat release rate, is selected as the fuel. A number of factors including temperature, visibility, and CO concentration are analyzed to examine their effects on the tenability of different zones and floors. The modeling is conducted by using PyroSim,a computational fluid dynamics (CFD) tool with the capability of simulating fire and optimized for low-speed, thermally-driven flow. Fire in a seven-storied ready-made garments (RMG) factory building, based on the actual drawing of an existing RMG building, is simulated and the tenability of the occupants isanalyzed.

Pyrosim fire model