I'm a HVAC engineer so I know a fair bit about fluid dynamics having designed commercial heating and cooling systems. The scale is different but the principle is basically the same.
Mind you, I know F.A about pc water cooling, so you may wish to run that past Mr pack here.
I'm currently building my own rig and I have some ideas for water cooling which isnt the norm, so I'm going to see whether my knowledge of heating and cooling systems makes a blind bit of difference.
Did you have a specific fluids question in mind?