News

PetraSim 5.4.0414

April 14, 2014

This is a maintenance release of PetraSim. This version increases the number of cells that can be used in simulations, adds support for cell-by-cell porosity, adds support for well data import, and includes several important bug fixes for TMVOC. Read More...

PetraSim – A shallow geothermal model with pipe flow

February 3, 2014
We recently had a customer request for some help with a shallow geothermal model. I thought it would be interesting to show one approach to simulating fluid flow in tubes (pipes) with heat conduction into the surrounding soil. When I first saw this problem, I thought that PetraSim (TOUGH2) might not be the best code for the solution. The pipe geometry would need to be approximated and if conduction is the dominant mechanism in the soil, there might be other codes that could do a good job. However, PetraSim (TOUGH2) does offer some unique advantages to simulate complex heat transfer in the soil, including the potential heat transport due to groundwater flow.  Read More...

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. Read More...

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.  Read More...

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.  Read More...