News

PyroSim 2014.3.1030

October 30, 2014

This is a maintenance release of PyroSim. This release includes a fix for a bug that could occur when loading a legacy PSM file with an adiabatic surface. Read More...

PyroSim 2014.3.1023

October 23, 2014

This is a maintenance release of PyroSim. This release includes changes to the Edit Surfaces dialog, additional preset views, static particle support, and elliptical sprays. This is the last release planned to include 32-bit support. Read More...

Online Participation – Fire and Evacuation Modeling Technical Conference 2014

September 4, 2014
Thunderhead Engineering is hosting the 2nd Fire and Evacuation Modeling Technical Conference on September 8-10, 2014 in Gaithersburg, Maryland. There will be two days of technical presentations on fire and evacuation modeling (September 8-9), with an optional third day of workshop classes on PyroSim and Pathfinder (September 10). Over 100 participants have registered to attend in ... Read More...

OpenMP Benchmarks

August 18, 2014
FDS now uses OpenMP to run faster on PCs that have multiple cores. This post presents two benchmark simulations that show how much improvement you can expect and how to configure simulations to use OpenMP effectively. Read More...

PyroSim 2014.2.0807

August 7, 2014

This is a maintenance release of PyroSim. The release includes updates for FDS and Smokeview as well as a fix for a bug with the Front and Left camera modes in the 2D View. Read More...

PyroSim 2014.2.0731

July 31, 2014
This is a maintenance release of PyroSim. This release includes updates for FDS and Smokeview, an improvement to the cluster execution feature, and bug fixes. Read More...

Radiation and Convection on Surfaces

April 25, 2014
Every solid surface in an FDS model defines convective and radiative flux thermal boundary conditions. Each of the terms are always being calculated, sometimes using default parameters that may not have been explicitly set. Read More...

PyroSim 2014.1.0331

March 31, 2014
This is a maintenance release of PyroSim. This release includes bug fixes and changes to the way PyroSim handles species. Read More...

Modeling Fire, Part 4 Addendum – Re-Analysis using HRRPUA Curve

March 19, 2014
This is an addendum to the Part 4 video on fire modeling. We re-analyzed the problem, changing the Heat Release Rate Per Unit Area (HRRPUA) from a constant value to a function (or curve). Read More...

Modeling Fire, Part 4 – Combustion with HRR, Ignition, and Burn Away

March 5, 2014
In this video we show how to model a fire using a specified heat release rate per unit area (HRRPUA), an ignition temperature, and burn away. This is about as complicated as models can be made without also simulating pyrolysis. Read More...