Viscous flow in pipes

[Josef_G]

Hello,
I'm designing a foam delivery system, and I need to keep it under a certain pressure.
I'd like to model the foam as a viscous fluid in order to get a rough estimate of pressure in the tubing system as a function of fluid velocity, viscosity and pipe diameter.
Could anyone point me in the direction of a guide/book to help me with these calculations?

Thanks

 

[danschwind]

I don't think modeling a foam as a single-phase common fluid will give you meaningful results, but if you want to try it, a simple application of the Darcy-Weisbach equation may suffice your needs.

Crane TP 410 will help you with this task.

Daniel
Rio de Janeiro - Brazil

 

[Compositepro]

Most foams will breakdown when flowing through pipe. A "foam delivery system" usually means pumping a fluid through a pipe, which is then turned to foam at the end of the pipe. If you really mean foam is flowing, then that would be done through something resembling an air duct rather than a pipe. Low shear is required.

 

[IFRs]

If this is an NFPA low- or medium- density foam delivery system, I think NFPA-11 has suggested friction factors.