• Support PF! Buy your school textbooks, materials and every day products Here!

Fluid Mechanics-pipe flow

  • Thread starter ld080
  • Start date
  • #1
1
0

Homework Statement



Oil must be transported over a distance L through a horizontal pipe at volume flow rate of Q, using a pump with power W. Find the minimum pipe diameter, D, which guarantees the exit pressure of Pe.


Common values:

sigma=(pipe roughness) = 0.05 mm
pi=(pressure at the inlet of the pump) = 10 kPa gauge,
rho=(kinematic viscosity) = 4 X 10-6 m2/s
gamma=(specific weight) = 7 kN/m3
L =
Q =
W =
Pe


Homework Equations



Colebrook Equation

The Attempt at a Solution



W=will dictate what pump outlet pressure you can have for specified Q. L will dictate how developed the flow will be among other things, and the Overall D along with Q and viscosity will dictate the Re Number. You are able to adjust D, so for a specified Q would could have a Laminar, transient , or turbulent flow. I am assuming that since he whats us to use friction factor calculations for turbulent flow you will have to choose a Q and D that result in a Turbulent flow not laminar.

I've got an idea of where to go with this, but I am a bit stuck at the moment. Thank you for any help I may get..
 
Last edited:

Answers and Replies

Related Threads on Fluid Mechanics-pipe flow

  • Last Post
Replies
4
Views
1K
Replies
9
Views
2K
Replies
9
Views
1K
  • Last Post
Replies
2
Views
4K
Replies
0
Views
13K
Replies
1
Views
1K
Replies
15
Views
571
  • Last Post
Replies
4
Views
1K
Top