News

Change Behavior in Pathfinder

May 16, 2018
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...

FEMTC 2018 Call for Papers and Key Speakers

April 18, 2018
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...

PetraSim 2018.1.0416

April 16, 2018
This release adds compatibility with TOUGHREACT v3.3, improves support for wells on deliverability, and includes bug fixes. Read More...

Korean Translation of PyroSim and Pathfinder

April 13, 2018
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...

Top 10 Reasons You Should be Using the New Integrated PyroSim Results

April 10, 2018
PyroSim now includes an integrated Results Viewer. Here are the top 10 reasons you should be using it. Read More...

Multiple Fuels with PyroSim

January 15, 2018

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.
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...

Results Viewer Released in PyroSim 2017.2

November 15, 2017
PyroSim now installs a new results viewer to further integrate Pathfinder evacuation simulations, CAD model textures, and camera tours designed in PyroSim. Read More...

PetraSim 2017.1.0828

August 28, 2017
This release fixes problems with the HydrateResSim user interface, improves Petrel import support, and fixes crashes related to viewing results.  Read More...

Pathfinder at People Movement and Management Show

July 31, 2017
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...

PetraSim 2017.1.0509

May 9, 2017
This release fixes bugs leading to incorrect output for sources, sinks, and wells.  Read More...