Open source for FE / Fluid Analysis?

[WIN]

Hi! I'm would like to ask if there's any open source available for FE/Fluid analysis?

I'm planning to use it to simulate icing and melting process in a ice storage based on different geometry.Its something like a fridge with coolant ect. I would like to simulate the icing and melting process with the consideration on the different shape(where the icing occur) and in consideration of its coolant and energy needed. For the geometry/shape i would be able to use CREO student version to work with.

 

[falling cat]

The best thing I can think of would be Autodesk CFD, which is free for students/personal use.

about:
http://www.autodesk.com/products/cfd/features/all/gallery-view

download: (need account)
http://www.autodesk.com/education/free-software/all

 

[Gullik]

http://fenicsproject.org

Open source FEM tools.