jlchard1
Aerospace
- Nov 27, 2013
- 10
I am trying to calculate the friction factor for a Fanno flow in a constant area duct. I know the friction factor is based on Reynolds number however does the Reynolds number not vary along the pipe due to a change in dynamic viscosity? (caused by a decrease in temperature along the pipe). And if so, does this not mean that the friction factor also changes along the pipe?