BlenderFDS is flexible.
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.
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.
Open, Multiplatform, Community driven.
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. None of these organizations finance, support, endorse, or otherwise recommend BlenderFDS.
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).