CFD 2016 (previously CFdesign) from Autodesk is designed for the 3D CAD drafter who wants to automate CFD (computational fluid dynamics) simulations of fluid and gas flows in combination with conduction and convection heat transfer. 

Powerful Autodesk simulation software helps you to improve designs, predict product performance and validate the behaviour of designs, significantly reducing the number of physical prototypes needed.

When you purchase a licence for Autodesk CFD 2019, you also have the right to use the 2016 version. This is the only way, in the new licensing structure, to "buy" CFD 2016 (further information on licensing).