Using PyroSim for Parallel Processing of Multiple Meshes

January 27, 2014
This video shows reasons to use multiple meshes, rules and guidelines for defining multiple meshes, how to use the multiple mesh tools, and how to run a parallel processor solution. Read More...

Create CO Sampling Device

December 28, 2013
This video demonstrates how to add a carbon monoxide detector and view its output. Read More...

Specify Elevator Door Selection

December 6, 2013
This video demonstrates more complex elevator door and exit selection. This is useful for elevators with more than one door to enter or exit from. Read More...

PetraSim 5.3.1203

December 3, 2013

This is a maintenance releaseĀ of PetraSim 5. This version adds support for two new equation of state modules: EOS7C, ECO2M.


Announcement Nov. 11, 2013

November 11, 2013
Pathfinder 2013 New Release Thunderhead Engineering is pleased to announce the release of Pathfinder 2013, our agent-based movement simulator for evacuation and crowd modeling. This major release adds wayfinding improvements, detailed occupant results, new 3D occupant models, and more. More than 25 new 3D occupant models One-way doors and door selection based on flow rate Optional door flow rate ... Read More...

Pathfinder 2013 Behavior Modes

August 28, 2013

Pathfinder 2013 includes changes to the behavior mode settings. This post outlines those changes and includes videos to help illustrate the differences.


Import DWG or DXF File

August 21, 2013
This video demonstrates the necessary steps to import a DWG or DXF file and create a model. Read More...

Create Elevators

August 21, 2013

In this video we show how to add elevators to a Pathfinder model.


Pathfinder: Import a DWG File

August 20, 2013

This video demonstrates how to import a dwg file into Pathfinder and then create the Pathfinder evacuation model using the dwg geometry. If you want to follow the demo, install Pathfinder 2013 and download this dwg file (). Extract the *.dwg file.


Pathfinder: Getting Started

August 20, 2013

This video helps you get started with Pathfinder. The first 15 seconds help you install and license Pathfinder. The rest of the video guides you through an example that illustrates several of the features in Pathfinder, including: occupant profiles and behaviors, elevators, stairs, and display options.