Revisiting the model, after some number crunching this one looks like a good candidate. The red areas show high velocity particles. It looks like this geometry would result in both axial and radial mixing but it's just a calculated guess. Time to break out the brass stock and see if the model can be validated.
#Repost@d3technologies (via @repostapp) ・・・ This is an outstanding visual prediction of how fluid would flow in the real world based on the computational fluid dynamics tools inside #Autodesk CFD. Learn more at: d3tech.net/solutions/simulation