Fire Dynamics

Analysis of ignition, development and fire propagation within the StudioFSE® framework.

Fire Dynamics is the foundational disciplinary domain for analyzing thermal phenomenology of fire. It addresses ignition mechanisms, fire growth, flame propagation, and energy release characterization through quantitative methods aligned with international Fire Safety Engineering standards.

Theoretical Foundation

Fire behavior is governed by conservation equations (mass, momentum, energy) applied to reactive flows. The StudioFSE® framework employs established correlations and computational methods to characterize:

• Ignition sources and ignition sequence
• Heat Release Rate (HRR) as primary design variable
• Flame height, plume dynamics and ceiling jet
• Thermal radiation and convective heat transfer
• Fire growth curves (t-squared, design fires)

Methodology

Fire Dynamics analysis within StudioFSE® follows a structured approach:

1. Fuel load characterization – Identification of combustible materials, calorific values, and spatial distribution
2. Scenario definition – Selection of representative and conservative design fire scenarios
3. HRR curve construction – Application of t-squared models, tabulated data, or experimental correlations
4. Thermal field prediction – Computational Fluid Dynamics (CFD) or zone modeling for temperature and heat flux
5. Verification against acceptance criteria – Comparison with tenability thresholds, structural limits, and safety objectives

Applications

Fire Dynamics analysis is applied across all project typologies:

• Definition of design fire scenarios for performance-based verification
• Input for CFD simulations (proFDS module)
• Basis for evacuation time analysis (ASET calculation)
• Thermal loading for structural fire engineering assessments
• Smoke production and toxicity estimates for tenability analysis

Normative References

Fire Dynamics methodology within StudioFSE® is aligned with:

• ISO/TR 13387 series (Fire Safety Engineering)
• NFPA 92 (Smoke Control Systems)
• EN 1991-1-2 (Actions on structures exposed to fire)
• SFPE Handbook of Fire Protection Engineering
• Italian Fire Code (DM 03/08/2015) – Performance-based approach

Related Framework Modules

Fire Dynamics domain is supported by:

• proFDS – CFD modeling and thermal field prediction
• proRISK – Scenario definition and risk quantification
• proTHERM – Thermal analysis and heat transfer

Framework Usage

The StudioFSE® computational framework provides structured tools and analytical workflows for fire engineering analysis. The application of any framework output within a specific project remains the responsibility of the qualified professional conducting the analysis.

For technical documentation and methodological references:

See Insights →