News

As of Pathfinder 2018.2, Behaviors can now dynamically change from one to another throughout the simulation. The new Change Behavior step allows the user to define a progression to one of the other Behaviors defined in the model. Read More...

Thunderhead Engineering is hosting the 4th Fire and Evacuation Modeling Technical Conference (FEMTC) on October 1-3, 2018 in Gaithersburg, MD. We have planned two and a half days of technical presentations on fire and evacuation modeling. Read More...

This release includes bug fixes and improves boundary vent visualization in Results. Read More...

Kimyoung Engineering Co.,Ltd has finished the process of translating PyroSim and Pathfinder into the Korean language. In addition to the software translations, they are working on the translation of tutorials and software documentation. Read More...

PyroSim now includes an integrated Results Viewer. Here are the top 10 reasons you should be using it. Read More...

This release adds support for behavior switching, improvements to results visualization, and support for the latest PSM files. Read More...

In Pathfinder 2018.1, occupants can be assigned to groups that move together during the simulation. In this post, we illustrate a few use cases. Read More...

This post demonstrates an undocumented feature in Pathfinder for visualizing experimental trajectory data in the Result Viewer. Read More...

We have begun coupling PyroSim fire results with Pathfinder movement. The first major task was to create a Results Viewer that could merge and display PyroSim and Pathfinder results simultaneously. That has largely been completed. We have also completed limited capability to calculate the Fractional Effective Dose (FED) as occupants move through changing CO, CO2, and O2 concentrations. Future development will use PyroSim results to alter occupant movement and decision making within the Pathfinder simulation. In this post, we demonstrate the capability currently available in Pathfinder 2018.1 and PyroSim 2017.2.  Read More...

This release adds support for movement groups, parameters to control which occupants will automatically use stairs and elevators, built-in libraries of profiles, and expanded support for FDS results in 3D Results. Read More...