News

Freezing HRR in PyroSim

November 11, 2015
A common strategy when modelling a fire with sprinklers is to assume the fire will be held at a constant heat release rate (HRR) when the first sprinkler activates. This post shows how to do this by automatically "freezing" the HRR at a constant value when a sprinkler activates.  Read More...

Training Events in Singapore, October 2015

October 14, 2015
The event "Best Practices for Fire Simulation: PyroSim and Pathfinder", will be hosted in Singapore at SCDF HQ, 91 Ubi Avenue 4, by our distribution partner Building System & Diagnostics Pte Ltd (BSD). Bryan Klein from Thunderhead Engineering will be presenting. Read More...

Viewpoints and Section Boxes for Better Perspective

September 14, 2015

PyroSim 2015.3 introduced two new tools to help engineers and their clients see the model in new ways. Viewpoints and section boxes, combined together to form a single view item, allow the user to save camera positions and clip geometry.

 Read More...

Updated FDS Combustion and Fuel Composition Calculators

September 2, 2015
This post describes updated combustion product and fuel composition spreadsheet calculators for use with FDS (the Fire Dynamics Simulator from NIST). Read More...

Heat Release Rates of Burning Items in Fires

August 19, 2015
A paper by Hyeong-Jin Kim and David Lilley (Heat Release Rates of Burning Items in Fires, AIAA 2000-0722, January 2000) summarizes experimentally measured heat release rates for more than 60 different items that could be involved in fires. The data sets used by Kim and Lilley include FASTLite, HAZARD, and the Building and Fire Research Laboratory data sets. As part of preparing PyroSim examples, we developed a spreadsheet that calculates the heat release rates using the data and method described in the paper.  Read More...

PyroSim 2015.3.0810

August 10, 2015
This release includes expanded OpenMP threading support in FDS, a new lighting model in Smokeview, and options to save views and clip geometry. Read More...

PyroSim 2015.2.0604

June 4, 2015
This release fixes problems working with vents and fixes problems resetting the view to the correct bounds. Read More...

PyroSim 2015.2.0512

May 12, 2015

This release fixes bugs that caused PyroSim to crash during paste operations after loading a file and when moving vents. Localized versions of PyroSim now include additional translations. Read More...

PyroSim 2015.2.0511

May 11, 2015

This update of PyroSim adds  support for circular vents, 11 output quantities, and bug fixes.
 Read More...

PyroSim Mesh Tools

April 17, 2015
This quick tip goes over a few of the available features in PyroSim for Meshes. Read More...