What is CFD fire modelling?
CFD stands for computational fluid dynamics. In fire engineering, it is a way of using computer calculations to study the movement of heat and smoke. Beigman's services include analysis using Fire Dynamics Simulator (FDS), alongside assessment of visibility and conditions affecting people in the building.
A model examines selected scenarios using defined inputs. It is a tool for assessing a proposal, with assumptions and limitations that need to be explained alongside the results.
Questions modelling can help investigate
- How smoke and heat could move through the spaces being assessed.
- How visibility and other conditions could change in relevant areas.
- How a proposed smoke management arrangement performs under the assessed scenarios.
- How the results support the wider fire engineering report or Performance Solution.
A clear scope before the simulation
We first establish the design question and review the available building information. The assessment scope identifies the scenarios to examine, the inputs needed and the criteria used to interpret the results.
We then carry out the agreed analysis and explain the findings in the context of the proposed design. The documentation records relevant assumptions and limitations so the project team can understand how to use the results. Changes to the building design may need further review.
Information that helps us get started
- Current floor plans, sections and the intended use of the spaces.
- Available details of smoke management and other relevant fire safety systems.
- The design question, existing fire engineering documents and project stage.
Common questions
Does every fire engineering report need computer modelling?
No. The analysis should suit the issue being assessed. We discuss the project and available information before identifying whether fire and smoke modelling is appropriate.
Is fire modelling the same as evacuation modelling?
No. Fire modelling examines fire, heat and smoke conditions. Evacuation modelling examines people's movement through a building. Beigman offers both services, which can inform the same assessment where relevant.