The number of high-rise buildings being constructed has risen substantially over the past three decades presenting numerous challenges for designers and Computational Fluid Dynamics Engineers and more recently CFD practitioners. The use of CFD has been widely accepted in the construction industry as a beneficial tool to provide design and risk assessment analysis to ensure that the design can achieve the design requirement and in the case of life safety is “fit for purpose”. This paper compares several CFD codes and compares differing approaches and highlights the limitations, computational costs, and computational solution variations between the various CFD codes and modelling approaches using an actual project. The paper will highlight some misconceptions and clarify the significance of differing modelling approaches.
Fire was set up in the room. The smoke generated from the fire enters the corridor during Means of Escape mode and Fire-fighting mode. The extract refrains the smoke from entering the stairwell.
The model shows the smoke and air particles in the corridor during Means of Escape mode and Fire-fighting mode.
Fire and smoke modelling is run for three different solid boundary conditions, i.e. conduction, inert and adiabatic. Air temperature at 1.8m height is shown as comparison.
Smoke is generated from the fire source in the room and entered the corridor. The push-pull system is in place to ensure sufficient smoke is extracted out from the building.
AIR SPEED DISTRIBUTION 20 storey building
TEMPERATURE DISTRIBUTION 5 storey building
BIM Building Information Modelling