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CFD Modelling

Computational Fluid Dynamics (CFD) is an advanced computer modelling tool that enables simulation and visualization of fire dynamics and smoke movement. Among many other applications, CFD modelling is used extensively for demonstrating performance-based design of smoke ventilation/management systems for car parks, atriums, warehouses, and tunnels. Authorities Having Jurisdiction (AHJ) require mandatory CFD analysis reports as part of the smoke management system design submittals for car parks and building atriums. Output of CFD analysis – plots of temperature, visibility and smoke clearance height – allow designers to evaluate multiple fire scenarios and iterate between system design parameters before arriving at an optimum solution that complies with the Code requirement (i.e. “tenability criteria”) and saves cost by justifying the need for avoiding over-engineered systems. While CFD simulation is carried out at the design stage, the effectiveness of the system in actual operation can be demonstrated using Hot Smoke Testing once the equipment is commissioned.

 

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