When inputting data into a zone fire model how is the fire typically described?

In a zone fire model, the fire is typically described using parameters such as heat release rate, temperature distribution, and smoke production. The fire is often represented as a series of zones, with each zone having specific characteristics like fuel type, combustion efficiency, and ventilation conditions. Additionally, factors like fire growth rate and the presence of obstacles or openings are considered to accurately simulate the fire's behavior and impact on the environment.