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 adds compatibility with TOUGHREACT v3.3, improves support for wells on deliverability, and includes bug fixes. 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...

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Updated Information Available

PyroSim 2018.2 now supports complex stoichiometry in the user interface. The post Complex Stoichiometry in PyroSim updates and replaces the contents of this post.

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PyroSim's design assumes that most users want to use FDS with a single-fuel, "simple chemistry" combustion model. For simulations requiring multiple fuel species, a few extra steps are required. This post demonstrates how to perform a multiple-fuel simulation using PyroSim.  Read More...

PyroSim now installs a new results viewer to further integrate Pathfinder evacuation simulations, CAD model textures, and camera tours designed in PyroSim. Read More...

This release fixes problems with the HydrateResSim user interface, improves Petrel import support, and fixes crashes related to viewing results.  Read More...

In July of 2017, Thunderhead participated in the People Movement and Management Show held in Derby, UK. Our goal was to introduce Pathfinder to the people movement audience. Pathfinder was originally developed for emergency evacuation simulation as a companion product to PyroSim, our fire simulator. But we are adding features that will make it possible ... Read More...

This release fixes bugs leading to incorrect output for sources, sinks, and wells.  Read More...