Thunderhead News

2021.2 Release – Available Now

Posted on May 10th, 2021

The latest updates for PyroSim, Pathfinder and Results are available now. The 2021.2 release focuses on creating new complex behaviors through queues, supporting social distancing through proximity analysis, and creating a better user experience.

View our Release Notes to download and see the full details, or read on for a quick look at what’s new. … Read More

Improvements in Results 2021.2

Posted on May 10th, 2021

Results 2021.2 includes a large new set of 2D plots for proximity analysis as discussed in a paper by Enrico Ronchi and Ruggiero Lovreglio. … Read More

2021.1 Release – Available Now

Posted on February 24th, 2021

The latest updates for PyroSim, Pathfinder and Results are available now. The 2021.1 release focuses on improving every day productivity.

View our Release Notes to download and see the full details, or read on for a quick look at what’s new. … Read More

Requested Improvements in Results 2021.1

Posted on February 10th, 2021

Our first release of the year will include requested improvements to our Results application. Results can view the output of the simulators embedded in PyroSim and Pathfinder. The improvements below help with visualizing social distancing hot spots using contours, showing cut outs from PyroSim slices, and improving the ability to edit colorbars for FDS results.

Social Distance Contours

Our first release of the year will include requested improvements to our Results application. Results can view the output of the simulators embedded in PyroSim and Pathfinder. The improvements below help with visualizing social distancing hot spots using contours, showing cut outs from PyroSim slices, and improving the ability to edit colorbars for FDS results.

Social Distance Contours
Figure: A Pathfinder model with the Social Distancing contour enabled. The occupants that are violating social distancing are highlighted with a scale that matches the severity of the violation.

Note: The social distancing contour has inverted coloring by default. This serves to better highlight the hotspots where occupants break social distancing.

Cut out obstruction in slices

After receiving several requests from users, we modified how the data inside of obstructions is displayed when viewing 2D and 3D slices in PyroSim Results. When viewing a slice in prior versions of PyroSim, the data inside of an obstruction was stored as a value of 0, and the slice would display the appropriate color for that region. In version 2021.1, slices will display blank areas where they intersect obstructions instead of showing the color for the 0 value. This should aid users and reduce confusion when showcasing results to clients and AHJs.

OBST data not cut out
Figure: A 2D temperature slice shown in version 2020.5 of PyroSim. The central wall (transparent and highlighted) appears in the slice as the blue color for a 0C temperature.
OBST data cut out
Figure: A 2D temperature slice shown in version 2021.1 of PyroSim. The central wall (transparent) does not appear in the slice, but the central hole in that wall (where relevant data is recorded) appears normally on the scale.

Colorbar – FDS Preferences Quantity selection

The FDS data preferences colorbar setting UI was updated so that the dialog now shows a drop-down for the quantity whose colorbar information you’re editing. If you activate an output object and then double-click the colorbar, it will show the FDS preferences dialog like before, but it will automatically select the quantity of the active object in the drop-down.

FDS Preferences Dialog

Note: There are some quantities that are technically the same. For example, GAS TEMPERATURE and TEMPERATURE are different quantities even though they both measure temperature. They show up as two different quantities in the drop-down since they have different names, and you can edit properties for each separately. You’re allowed to activate objects of both quantities at the same time, but only the properties for the last activated quantity are used.

All FEMTC 2020 Videos Now Available

Posted on December 16th, 2020

In September, Thunderhead Engineering welcomed a record attendance to FEMTC 2020 in its first virtual edition. We are excited to present to you the full set of presentations from our event with videos, papers, and slides available. This material is free for anyone to download/view. … Read More

2020.5 Release – Available Now

Posted on November 17th, 2020

Our latest updates for PyroSim, Pathfinder, and Results are available now. View our Release Notes to download and see the full details, or read on for a quick look at what’s new. … Read More

2020 R&D Overview – Past, Present, & Future

Posted on November 5th, 2020

In Brian’s second talk at FEMTC 2020, he presents an overview of research and development at Thunderhead Engineering in the years since FEMTC 2018. If you haven’t yet watched his first presentation, you can view it now for a deep dive into Pathfinder movement behavior research. This presentation covers the bulk of many other topics we’ve focused on. … Read More

Visual Improvements in Results 2020.5

Posted on November 2nd, 2020

Since introducing our Results application which combines PyroSim and Pathfinder output into a single workspace, we have continued to improve the visual realism of this application. Our users report that improvements in rendering smoke, textures, and occupant animation not only give their work a more professional look, but also increase the clarity of their findings. In the upcoming 2020.5 release, we will add several new features to deliver even more impressive fire and evacuation model reports. … Read More

Social Distance, Queues, and More Research

Posted on October 27th, 2020

In September, Thunderhead Engineering welcomed a record attendance to FEMTC 2020 in its first virtual edition. We are excited to begin delivering the presentations from that conference to everyone. First, we have a discussion of several different occupant movement topics researched by the Thunderhead Engineering R&D team and presented by President Brian Hardeman. There’s more to come! … Read More

2020.4 Release Preview

Posted on September 2nd, 2020

PyroSim and Pathfinder 2020.4 bring many new features. Here is a quick look at the biggest additions. View the full release notes and download the installers for PyroSim and Pathfinder. … Read More

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