To start a fire dynamics simulation, navigate to the Simulation Control tab, select Fire Dynamics for a desired scenario and click the 
button.
To quickstart evacuation simulation in current scenario, click the 
button. If the simulation launch button looks like a 
, press the down arrow, and in the menu that opens select Fire Dynamics Simulation.
You can run a fire dynamics simulation for multiple scenarious simultaneously.
If a scenario involves alarm detectors, and a fire dynamics simulation is conducted for the subsequent fire risk calculation, instead of performing fire dynamics simulation, a risk calculation must be made. For more details, see Risk Calculation on Civil Objects.
Fenix+ 3 application allows you to run fire dynamics simulation using the Fenix Server software package. For details, see Simulation with Fenix Server
To pause a fire dynamics simulation, click the 
button. You can resume it any time, even after closing and then reopening the project.
To resume a fire dynamics simulation, click the button.
To stop a fire dynamics simulation, click the 
button.
Depending on the type of the open project, the appearance of the simulation control tab can differ from what is shown.
Before starting the simulation, the scenario is checked for errors that may affect the evacuation simulation. For more information see Checking a Project for Errors.
If any critical errors are detected in the scenario, an error panel is displayed at the bottom of the main application window.
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If there are critical errors in the scenario, evacuation simulation is not possible.
To continue working, it is necessary to address all critical errors. Only after that it is possible to conduct a fire dymnamics simulation.
A scenario can also contain errors which allow to conduct the fire dynamics simulation, but the simulation results in this case may be unreliable. If such errors are detected in the scenario, a corresponding message appears.
In this case, you can ignore the warning and try to simulate the scenario without addressing the errors, or look at the detected errors, make corrections if necessary, and only after that run the simulation.
If there are no errors in the scenario, or the user ignores them, then the Fenix+ 3 application determines the approximate amount of RAM required for the simulation. For more details see Calculation Area.
If the required amount of RAM exceeds the amount of free memory (or the amount of free memory cannot be determined), the corresponding information message is displayed.
You can cancel the simulation to make adjustments to the project (No answer), or try to run the simulation, leaving the scenario unchanged (Yes answer).
In the Fenix+ 3 application, the fire dynamics simulation process has the following statuses:
Not calculated — simulation for this scenario has never been done, or changes have been made to the scenario that require to re-run the simulation.
Running — Simulation is being performed for this scenario.
Done — The simulation for this scenario is successful.
Error — an error occurred during the simulation that did not allow to complete the calculation. The cause of the error can be one of the ignored program warnings.
When conducting the fire dynamics simulation using the Fenix Server, the following additional statuses are possible:
Being sent — the project is sent to the server.
Verification is in progress — the project is being checked for restrictions on the server.
Number in queue — the project is waiting for the server to start simulation.
Archiving — the simulation results are being archived on the server before being sent to the local computer.
Downloading — the archive with the simulation results is being downloaded to the local computer.
Extracting — simulation results are being extracted from the archive.