PyroSim 2026: baixar versions anteriors

This release of PyroSim has some powerful new features and improvements to existing capabilities. Download the new version to work more efficiently with CAD geometry and Mesh Refinement Zones!
CAD Quality Adjustment
For many years, PyroSim has supported importing CAD geometry. However, users do not always have access to concise models with relevant geometry. Often, there are many CAD objects that complicate and slow down PyroSim.
PyroSim 2026.2 delivers CAD adjustment features that enable more efficient modeling workflows:
- On import, you can specify Object Quality (See the Creating Geometry from CAD page). This reduces the number of triangles used to represent imported geometry.
- After import, you can perform a similar operation upon any selected imported geometry. The new context-menu action allows users to Simplify Imported Geometry.

Figure 1. Simplifying Imported Geometry
- Best of all, you can set imported geometry to be ignored in an FDS simulation.

Figure 2. Display Only
Use this action to set an object in the model to Display Only and it will not be used in the FDS simulation. Generic Geometry is not converted to OBST or GEOM entries, but are available in Results (when PyroSim Geometry is active).
Mesh Refinement Zone Enhancements
PyroSim 2026.2 enhances the Mesh Refinement Zones workflow.
- This update adds a filter to preview the meshes resulting from refinement zones in the Model View, called Show Mesh Refinement Preview. This adds two new filters to the Mesh filter toolbar.

Figure 3. Using Show Mesh Refinement Preview
- Expanded support for nested Mesh Refinement Zones makes them easier to use on building models with floor geometry.

Figure 4. Nested Mesh Refinement Zones
- Also, Meshes in the Object Tree now display the optimal level of information about effects of mesh refinement.

Figure 5. Nested Mesh Refinement Zones with tree info
When put all together, these changes make it easier to complete your individual workflow and work efficiently with Meshes in PyroSim 2026.2.
Complete the updated example to experience these changes.
Control Value Devices
Users can now cleanly use math controls as inputs to other activation control logic, a long sought after feature.

Figure 6. Editing Activation Controls
- Now, Math Control output values can be written to a CSV file and also may be used as numeric inputs for other Mathematical and Custom Controls.
- This will also help users work with Statistics Devices.
HVAC 3D Modeling with Waypoints
Prior to this release, HVAC Waypoints did not have a graphical representation (they were only supported as text entries in a table). Now, Waypoints and the duct paths are visible in the Model View.

Figure 7. HVAC Waypoints in 2D Top View
Door Activation Changes
Behind the scenes changes to controlled activation of openings in PyroSim allow users to more seamlessly build models with doors opening during the simulation.

Figure 8. Models with holes controlled by Activation work more seamlessly
(Door closing controls still suffer from the initial state bug.)
Results Integration with Pathfinder
Results handling has improved the compatibility of PyroSim (FDS) results with Pathfinder in Results. Read more about the changes to Results in the Results Documentation.

User Experience Improvements
PyroSim 2026.1 delivers meaningful user experience and stability improvements aimed at creating a smoother, more efficient modeling workflow. Expanded support for additional keyboard shortcuts helps users work faster and more intuitively, while updated warnings provide clearer feedback during model setup. Stability has been improved during scenario creation, reducing interruptions in complex projects, and major OpenGL updates have enhanced rendering stability, resulting in more reliable and consistent visualization performance.
Results Changes
Results handling in the new PyroSim release has been enhanced to better support common analysis workflows and reduce manual setup. 3D Smoke results are now automatically activated when available, allowing users to immediately visualize smoke behavior without additional configuration. In addition, CSV results data can now be auto-loaded, streamlining access to numerical output and making it easier to review, plot, and post-process simulation results directly after a run completes.
You can read more about the changes to Results in the Results Documentation.
Documentation Improvements
The 2026.1 release includes a major overhaul of the product documentation, focused on making information easier and faster to access. Navigation has been significantly improved through the introduction of pagination, allowing users to move more quickly between sections, while a new document-wide search tool makes it easier to find specific topics and answers. Pages that are new or have been updated are now clearly highlighted, helping users quickly identify what has changed in the latest release.
In addition, previously separate manuals and content have been consolidated into a single, unified document, reducing fragmentation and simplifying the learning experience. The documentation has also been reorganized to improve the discoverability of related content, making it easier for both new and experienced users to explore features, understand workflows, and find relevant guidance without unnecessary searching.
Explore the updated documentation by trying the new search tool located at the top of the documentation table of contents, which provides a quick way to jump directly to relevant information. Be sure to review the Examples section (formerly Tutorials) for practical, step-by-step guidance, visit Troubleshooting (previously FAQs) for help resolving common issues, and explore the Advanced Topics and Appendices for deeper technical detail and reference material that support more complex use cases.
Streamlined Introduction for New Users
This release introduces a streamlined Introduction and Fundamentals documentation experience designed to help new users get up and running more quickly. The updated materials present core concepts, workflows, and interface elements in a clearer, more focused structure, reducing the learning curve for first-time users. By emphasizing practical fundamentals and approachable explanations, the new documentation makes it easier for users to build confidence and begin creating effective fire modeling projects in PyroSim.
Get started by checking out the Your First Fire example.

User Experience Improvements
PyroSim 2026.1 delivers meaningful user experience and stability improvements aimed at creating a smoother, more efficient modeling workflow. Expanded support for additional keyboard shortcuts helps users work faster and more intuitively, while updated warnings provide clearer feedback during model setup. Stability has been improved during scenario creation, reducing interruptions in complex projects, and major OpenGL updates have enhanced rendering stability, resulting in more reliable and consistent visualization performance.
Results Changes
Results handling in the new PyroSim release has been enhanced to better support common analysis workflows and reduce manual setup. 3D Smoke results are now automatically activated when available, allowing users to immediately visualize smoke behavior without additional configuration. In addition, CSV results data can now be auto-loaded, streamlining access to numerical output and making it easier to review, plot, and post-process simulation results directly after a run completes.
You can read more about the changes to Results in the Results Documentation.
Documentation Improvements
The 2026.1 release includes a major overhaul of the product documentation, focused on making information easier and faster to access. Navigation has been significantly improved through the introduction of pagination, allowing users to move more quickly between sections, while a new document-wide search tool makes it easier to find specific topics and answers. Pages that are new or have been updated are now clearly highlighted, helping users quickly identify what has changed in the latest release.
In addition, previously separate manuals and content have been consolidated into a single, unified document, reducing fragmentation and simplifying the learning experience. The documentation has also been reorganized to improve the discoverability of related content, making it easier for both new and experienced users to explore features, understand workflows, and find relevant guidance without unnecessary searching.
Explore the updated documentation by trying the new search tool located at the top of the documentation table of contents, which provides a quick way to jump directly to relevant information. Be sure to review the Examples section (formerly Tutorials) for practical, step-by-step guidance, visit Troubleshooting (previously FAQs) for help resolving common issues, and explore the Advanced Topics and Appendices for deeper technical detail and reference material that support more complex use cases.
Streamlined Introduction for New Users
This release introduces a streamlined Introduction and Fundamentals documentation experience designed to help new users get up and running more quickly. The updated materials present core concepts, workflows, and interface elements in a clearer, more focused structure, reducing the learning curve for first-time users. By emphasizing practical fundamentals and approachable explanations, the new documentation makes it easier for users to build confidence and begin creating effective fire modeling projects in PyroSim.
Get started by checking out the Your First Fire example.