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FDS is a CFD model most widely applied to fire-driven fluid flow, although it can be used for a very wide range of applications. The software solves numerically a form of the Navier-Stokes equations appropriate for low-speed, thermally-driven flow with an emphasis on smoke and heat transport from fires.

Smokeview is a visualization program that is used to display the results of an FDS simulation.

A finite-difference method is used with a rectilinear grid and automatically optimized time-stepping. LES or DNS can be used. A Smagorinsky sub-grid model is used with LES.

All Fortran source code is available.

Developed by the Building and Fire Research Laboratory, National Institute of Standards and Technology, US Department of Commerce

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