News

Coupling PyroSim Fire Results with Pathfinder Movement

February 14, 2018
We have begun coupling PyroSim fire results with Pathfinder movement. The first major task was to create a Results Viewer that could merge and display PyroSim and Pathfinder results simultaneously. That has largely been completed. We have also completed limited capability to calculate the Fractional Effective Dose (FED) as occupants move through changing CO, CO2, and O2 concentrations. Future development will use PyroSim results to alter occupant movement and decision making within the Pathfinder simulation. In this post, we demonstrate the capability currently available in Pathfinder 2018.1 and PyroSim 2017.2. See the post Manually Coupling FDS and Pathfinder to Respond to Smoke for instructions on how to link fire simulation output with evacuation simulation movement  Read More...

WIND in PyroSim

February 6, 2018
FDS version 6.6.0 added a new WIND namelist to describe wind and atmospheric conditions. Support for WIND was included in PyroSim 2018.1. This post demonstrates this feature.  Read More...

Multiple Fuels with PyroSim

January 15, 2018

Updated Information Available

PyroSim 2018.2 now supports complex stoichiometry in the user interface. The post Complex Stoichiometry in PyroSim updates and replaces the contents of this post.
PyroSim's design assumes that most users want to use FDS with a single-fuel, "simple chemistry" combustion model. For simulations requiring multiple fuel species, a few extra steps are required. This post demonstrates how to perform a multiple-fuel simulation using PyroSim.  Read More...

Pathfinder 2018.1.1220

December 20, 2017
This release adds support for movement groups, parameters to control which occupants will automatically use stairs and elevators, built-in libraries of profiles, and expanded support for FDS results in 3D Results. Read More...

Managing Quality in Fire Safety Design Projects Involving RSET Analyses

December 13, 2017
Many modelling approaches can be used to assess evacuation time of buildings in fire situations. We present in this paper a new model, implemented in a collaborative work between LEMTA and CNPP, and based on a macroscopic continuous approach. Read More...

An Emergency Egress Model Based On A Macroscopic Continuous Approach

November 28, 2017
Many modelling approaches can be used to assess evacuation time of buildings in fire situations. We present in this paper a new model, implemented in a collaborative work between LEMTA and CNPP, and based on a macroscopic continuous approach. Read More...

Fire Scenarios Assessment

November 28, 2017
In 2008, the DIN working committee NA 005-52-21 AA started its work to standardize fire safety engineering methods in Germany. The second subdocument DIN 18009 Part 3 shall cover the design fire scenarios and design fires. Some ideas related to methodology, requirements and scenario-based design are presented in this article. Read More...

Results Viewer Released in PyroSim 2017.2

November 15, 2017
PyroSim now installs a new results viewer to further integrate Pathfinder evacuation simulations, CAD model textures, and camera tours designed in PyroSim. Read More...

PyroSim 2017.2.1115

November 15, 2017
This update includes additional support for FDS features including leakage, linear device arrays, and advanced HVAC records; reliability improvements for local parallel FDS simulations; and a new default results viewer. Read More...

Importing FDS Validation Examples into PyroSim

October 23, 2017
The FDS validation suite compares FDS (Fire Dynamic Simulator) results with experimental data. These examples cover most of the features of available in FDS. When you want to use a new feature in FDS, you can speed your learning by reviewing how the feature was used in a validation example. This post shows how you can quickly import the FDS model into PyroSim.  Read More...