News

This release adds support for BIM model import using the IFC format, opening Results visualization in VR headset mode, and updated support for FDS version 6.7.0.  Read More...

A long-term development goal has been to fully couple the PyroSim/FDS fire results with Pathfinder evacuation. A first step toward this goal is the capability to display both fire and evacuation results in the same results viewer. However, full coupling of the two simulations has not been completed. In the interim, it is possible to run the fire simulation, monitor the reduced visibility due to smoke, and then manually use that information to slow and re-direct occupants in response to the fire. This provides an example.  Read More...

The Fire and Evacuation Modeling Technical Conference (FEMTC) 2018 concluded earlier this month as a tremendous success. Moving back to the United States after visiting southern Spain in 2016, this year’s conference was held in Gaithersburg, Maryland just around the corner from the NIST campus. Over 70 individuals were in attendance. Conference members included engineers, ... Read More...

The next releases of Pathfinder and PyroSim will include the capability to display results using the Oculus Rift virtual reality (VR) headset. This post gives a preview of how to use this capability.  Read More...

Register for FEMTC 2018 before August 15th, 2018 and save $100. Read More...

Views, Tours, and Section Boxes can now be created directly within the Results Viewer. These objects can be trasnferred from one set of results to another via import. Also, screenshots can be automatically generated based on the views and tours that are created. Read More...

This release includes support for complex reaction stoichiometry, improved support for graphics hardware, and bug fixes. Changes to Results include creating views and section boxes, unit switching for concentration and temperature, and many other improvements. Read More...

FEMTC 2018 event registration and hotel reservation links are online. Accepted presentations are now listed on the webpage and there will be a NIST NFRL tour option available on day 3. Read More...

Leakage refers to the air that escapes through small gaps as a compartment is pressurized by a fire. Pressure zones can be used to model this effect. Read More...

PyroSim version 2018.2 will support complex stoichiometry in the user interface. Previously, PyroSim supported the FDS single-fuel, "simple chemistry" combustion model but complex stoichiometry required some manual input by the user. This post demonstrates how the new user interface capability can be used to represent multiple fuels and other complex reactions. If you would like to test this beta version, contact support@thunderheadeng.com.  Read More...