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The open user interface for Fire Dynamics Simulator (FDS)

BlenderFDS is flexible.

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Welcome to BlenderFDS, the open source graphical interface and pre-processor for Fire Dynamics Simulator (FDS), a computational fluid dynamics model of fire-driven fluid flow.

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The development of BlenderFDS is funded by a grant from the Italian Ministry of Foreign Affairs and International Cooperation.

By the research project WUIFI-21 (High fidelity computational fluid dynamics modeling of forest fires for Wildland-Urban Interface communities resilience and protection) the participating organizations intend to extend the capabilities of FDS on the prediction of wildland-urban interface fires propagation.

Full control over the FDS input file.

BlenderFDS let the user keep the exported FDS input file under full control, while easying geometric data entry. BlenderFDS is based on Blender, an open source 3D content creation suite.

Getting started.

BlenderFDS cannot replace your knowledge and ability to build simple architectural models in Blender and using FDS for CFD fire simulation. So, before starting with BlenderFDS, learn how to perform simple fire simulations with FDS. Then become familiar with Blender and able to import simple architectural models designed with your preferred CAD tool.

When you feel comfortable with FDS, install BlenderFDS, enjoy its flexibility, speed up your workflow.

Use BlenderFDS Wiki to discover its features, and you can always obtain further assistance from BlenderFDS Community on the BlenderFDS Discussion Group.

Open, Multiplatform, Community driven.

BlenderFDS was first released on May 5, 2010 by Emanuele Gissi. It is free and open-source software, released under the GNU GPL v3 license.

BlenderFDS can be freely used for any purpose, including commercial use and distribution. It is available for Linux, Mac OS X and Windows and has a committed world-wide community.


BlenderFDS effort is completely unrelated and independent from FDS development performed at NIST and other organizations.

BlenderFDS is provided as it is, and support is community-based. If you need commercial grade support, please refer to other commercial alternatives (eg. Pyrosim).