Finding head difference between reservoirs using Darcy's equation

[eddierolling]

hi

me again sorry.

i have a problem to solve finding the head difference between two reservoirs connected by a pipe.

i have to use D'Arcy's equation to solve this.

the only data i have is the flow rate, the pipe length and diameter. i also have the pipe roughness in mm but i don't have the frictional coefficient or any pressures in the pipe or reservoirs.

i have searched the net and books i have access to and to find the Frictional coefficient i seem to need pressures.

am i missing something or can this problem not be solved without additional information?

thanks

 

[minger]

The problem can be solved. You do not need pressurse to find frictional coefficient; perhaps you are forgetting your Moody diagram?

Give it a try and show your work and from there we can guide you through the rest.