Fenix + brings together three key features - evacuation simulation capabilities, fire simulation capabilities and the ability to perform ad-hoc calculations. In addition, Fenix + has 3D, which allows you to build complex building models.
Single platform solution
Simulation of physical processes using a single application
The application supports many functions for importing various graphic data. Import functions reduce the time to create a model
After import, it is possible to move the image, set a specific level, adjust the transparency, and also import additional images.
More information about the image import function can be found at the following link in the documentation:
Importing a floor background image
You can import a point cloud, which is a 3D representation of the topology of a building, the internal structure of a building, or any part of it, into a project. Import of PTX files is supported.
The application allows you to import object topology from dwg / dxf files, which potentially saves time for setting up and preparing the model for subsequent modeling.
The capabilities of the graphic editor are usually sufficient to reproduce topologies of any complexity, including spaces with many levels, volumes of complex shapes, atriums, and extended linear objects. The graphical editor provides many tools for accurate model creation, such as walls, doors, windows and other objects.
Features of creating a model
The key feature of the implemented approach is that once created 3D model can be reused both for evacuation modeling and for fire modeling. And also combine it in various scenarios.
Simulation of the movement of people
Diverse placement methods and profiles of people
The simulation engine implements a mechanism for avoiding obstacles and avoiding collisions with other people
Movement on ramps, flights of stairs and spiral staircases
For different contingents of people participating in the flow, it is possible to separately adjust the speed when moving along ramps, stairs and spiral flights
People contingent editor
Редактор контингентов позволяет создавать контингенты людей с произвольной зависимостью скорости движения людей от плотности потока.
Для каждого человека можно определить его высоту, площадь проекции, цветовое обозначение и характер движения по элементам топологии.
Существует возможность определить основной тип зависимости, который будет использоваться при моделировании движения людей.
Fire Dynamics Simulation
To simulate the dynamics of fire development in the Fenix + 3 application, the FDS (Fire Dynamics Simulator) program is used, developed by the National Institute of Standards and Technology (NIST / NIST) of the US Department of Assistance with the assistance of the VTT Technical Research Center.
The FDS program implements a computational hydrodynamic model of heat and mass transfer during combustion. FDS numerically solves the Navier-Stokes equation for low-velocity, temperature-dependent flows. The FDS focuses on smoke propagation and heat transfer in a fire.
Transferring geometry to FDS
Fire Dynamics Simulator is a console-less application that does not allow you to create 3D models of buildings. The function of creating the building model is taken over by Fenix + 3.
To perform simulation using the FDS program, you need a specially prepared text file in ASCII format with the “fds” extension (hereinafter referred to as the input file). The input file must contain all the necessary parameters for describing the scenario, combined into groups.
The Fenix + 3 application generates an input file based on the script that the user created in the application. Scenario objects and their properties, as well as modeling parameters, are converted to one or more parameter groups in the input file.
This is an area in which it is necessary to simulate the development of a fire. The calculation area is the prototype of the MESH groups in the FDS. When placing the calculation area on the scene, its size and position are automatically aligned in the X and Y directions along the coordinate grid. In each scenario, you can associate multiple calculation areas with different cell sizes.
Accounting for leaks through doors and windows
Realistic simulation of air exchange between rooms during a fire is an urgent task. In addition to the direct exit of hot air and combustion products through open door and window openings, air seepage through leaks in closed openings is of great importance. Such seepage in a fire occurs actively, since due to the increase in temperature, there is a significant pressure difference between adjacent rooms.
Possibilities for performing special calculations
The application allows you to compare the values of ASET and RSET at arbitrary points in the building
Available Safe Exit Time (ASET) is the time that elapses between the ignition of a fire and the development of an unacceptable building environment.
Required Safe Exit Time (RSET) is the amount of time (also measured by fire) it takes residents to evacuate a building or area and reach the outside of a building or protected exit fence.
Comparison of ASET and RSET values is done taking into account the safety factor. If ASET is greater than RSET, it can be concluded that the space-planning solutions of the building are made safely and suitable for use.