News

Modeling Jet Fans, Part 2: Validation using Experimental Data

April 11, 2016
It is not feasible to simulate full scale parking garages with such a fine mesh, even if multiple meshes are used. This post discusses ways it may be possible to use a larger mesh size and still obtain meaningful results. Read More...

FDS Cluster Free Upgrade for PyroSim

March 28, 2016
PyroSim 2016.1 is set to release in the next two weeks, including support for additional DEVC fields and new CAD file import options similar to those added in Pathfinder 2016.1. In addition, all PyroSim licenses will now include unrestricted use of the cluster simulation option. This is a permanent change which will automatically take effect, saving users 30% of the cost of purchasing PyroSim with the Unlimited Cluster Option. Read More...

Velocity Patch in FDS

March 24, 2016
It is not feasible to simulate full scale parking garages with such a fine mesh, even if multiple meshes are used. This post discusses ways it may be possible to use a larger mesh size and still obtain meaningful results. Read More...

Import Support for FBX, OBJ and Improvements for DWG, DXF

March 11, 2016
Pathfinder now supports FBX and OBJ file formats in addition to DWG, DXF, and DAE. All existing file formats have also seen major graphical improvements. Read More...

Measurement Regions for Density & Velocity

March 10, 2016
Pathfinder 2016 includes a new UI object called measurement regions. These red boxes record density and velocity values to a CSV file. They are drawn over the navigation surfaces in areas of steady flow. Read More...

Hydrostatic Pressure Conditions in PetraSim/TOUGH

March 9, 2016
This is the first in a series of posts discussing the initialization of a TOUGH model to represent realistic natural state conditions.  In almost all cases, it is beneficial to run a model to steady state before adding transient boundary conditions, injection or pumping wells, etc.  We’ll give a very simple example first, where we’ve used EOS3 to establish a hydrostatic pressure gradient in a single phase model. Read More...

Comparing NFPA 130, SFPE and Pathfinder

March 3, 2016
The NFPA 130 Standard for Fixed Guideway Transit and Passenger Rail Systems (2014) covers life safety and fire protection requirements for passenger rail systems. Read More...

Fractional Effective Dose Integration with Evacuation Results

March 2, 2016
Combine evacuation simulations with species volume fractions to output fractional effective dose. Read More...

Pathfinder 2016.1.0229

February 29, 2016
This update adds import support for FBX and OBJ files and adds detailed occupant exposure tracking based on FDS output. Read More...

Shopping Mall, Switzerland

February 10, 2016

Pathfinder case study by Christian Kohler from Swissi.

This evacuation simulation was conducted as part of a security screening of an existing shopping mall in Switzerland. Defined evacuation routes were simulated with a set pre-movement time to analyze jam times and total evacuation times.  Read More...