FEATFLOW is a sophisticated FEA CFD code for incompressible laminar Newtonian fluids. The visualization you see below was done through SLFFEA although FEATFLOW comes with its own visualization software. It also has some very impressive mesh generators.

This is a 1184 element 1485 node mesh of a 3-D rectangular region with a cylindrical obstruction. This mesh is an example mesh which can be generated by the mesh generator.

This is the x component of velocity for the problem described above although the discretization has been increased to 75776 elements and 80388 nodes. The cutting planes feature of SLFCFD was used to see the flow near the center.

This is an image of the pressure distribution for the above problem.

A version of the above problem was also solved in 2-D by featflow. This is an image of the stream function after 54 time steps at 3.00789428 seconds.

The same problem as above, but the pressure is shown.