Thunderhead Engineering Pathfinder v2015.2.1012-(x86/x64) | 210 MB
Pathfinder is an emergency egress simulator that includes an integrated user interface and animated 3D results. Pathfinder allows you to evaluate evacuation models more quickly and produce more realistic graphics than with other simulators.
Robust Import Options
If you have a blueprint, it can be imported in GIF, JPG, or PNG format and then used as a background to help you rapidly draw your model directly over the image.
Continuous Movement Mesh
Pathfinder uses a 3D triangulated mesh to represent the model geometry. As a result, Pathfinder can accurately represent geometric details and curves.
Triangulation also facilitates continuous movement of persons throughout the model, compared to other simulators that subdivide the space into cells that can artificially constrain the movement of occupants.
Multiple Simulation Modes
Pathfinder supports two simulation modes. In Steering mode, agents proceed independently to their goal, while avoiding other occupants and obstacles. Door flow rates are not specified but result from the interaction of occupants with each other and with boundaries. In SFPE mode, agents use behaviors that follow SFPE guidelines, with density-dependent walking speeds and flow limits to doors. SFPE results provide a useful baseline for comparison with other results, but SFPE calculations do not prevent multiple persons occupying the same space.
Optionally, Pathfinder allows you to specify door flow rates in steering mode to obtain superior visualization in a constrained model. You can freely switch between modes in the Pathfinder user interface.
Occupant Movement to Exits
By default, each occupant (agent) uses a combination of parameters to select their current path to an exit. The parameters include: queue times for each door of the current room, the time to travel to each door of the current room, the estimated time from each door to the exit, and the distance already traveled in the room. The agent responds dynamically to changing queues, door openings/closures, and changes in room speed constraints (simulating smoke and debris). The user can modify the default parameter weights to change the behavior. For example, occupants can neglect queues and only look for the closest exit.
Alternately, occupants can be assigned specific goals (such as, go to a location and wait) or specific exits. For example, most occupants of lower floors can be assigned to use stairs, while most occupants of higher floors can be assigned to use elevators.
High-quality 3D Visualization
Pathfinder includes human models that represent a range of cultures, ages, attire, and emergency responders. These make it possible to realistically portray the population group of interest. Because we use a dynamic level-of-detail to display the models, Pathfinder can smoothly animate tens of thousands of people in real time using a standard graphics card.
Pathfinder also provides easy tools to create movies that document the results.
Pathfinder gives you the flexibility to evaluate evacuation options using elevators. Each elevator has a priority list of pickup floors and a discharge floor. People can move directly to the closest elevator or be directed to go to a refuge floor and wait until evacuated by elevator. Emergency responders can control selected elevators to carry them to desired locations.
A call to an elevator is initiated by a queue at the elevator door. Elevators can be grouped in banks to respond to calls.
Stairways, Escalators, Moving Walkways, and Ramps
Stairways and ramps are created using simple mouse clicks on landings. Optionally, stairways and ramps can be used to represent escalators and moving walkways (sloped or flat).
Each person in the model acts as an agent with their own profile (such as size and walking speed) and their own behavior (such as exits, waits, and waypoints). Based on their characteristics, each person uses their local environment to make decisions on exit paths. For example, people can dynamically avoid long queues or respond to the closure of doors.
Multiple profiles can be created and assigned to different populations. Parameters in each profile can be described using constant, uniform, standard normal, or log normal distributions. For example, profiles representing children and adults can be created and then the population can be assigned to be 80% adult and 20% children. Similarly, multiple different behaviors can be created and assigned to populations. People may have different exit goals and may proceed to waypoints or wait before proceeding.
Turnstiles and Other Flow Constraints
The flexibility provided by Pathfinder can be used to simulate relatively complex flow situations. For example, by combining doors that have specified flow rates, way points, and wait times, Pathfinder can simulate queuing and proceeding through turnstiles.
Emergency responders can be directed to proceed up a stairway (against the evacuation flow) to a specified location and wait before proceeding to another location.
Doors and room speed modifiers can be scripted to activate or deactivate at prescribed times, simulating a changing environment during an evacuation.
Powerful Results Evaluation
Display of 3D results is available both during the calculation (to view current status) and immediately on completion. The 3D display allows the user to interactively display occupant movement, run back and forward in time, view paths, and select people to watch. A summary output file includes min, max, and average exit times and first-in and first-out times for rooms and doors. Detailed information is available in CSV files, including movement of individual people.
In addition to the 3D display, charts of room occupancy and door flow rates help you quickly evaluate points of congestion.
Whats New in This Release:
This update adds improved movement algorithms for group cornering and counterflow, separate speeds for moving up and down stairs, and import support for AutoCAD 2016.
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