All Questions
6
questions
0
votes
2
answers
162
views
Pumps' geometric similarity
Given two pumps that are similar :
$H_1=70-1.41x10^{-3}Q_1^2$
$H_2=100-1.1x10^{-3}Q_2^2$
Find the geometric scale :
$\frac{D1}{D2}= ?$
I am also given maximum efficiency = 1.
I tried solving but I got ...
- 131
1
vote
1
answer
285
views
Why is the head loss in submerged pipe is 0
Looking at this question :
Point C head loss is 0 according to the author
Bottom right
Can’t understand why , any good explanation for this claim ?
Look at page 33 at the top
- 131
-1
votes
1
answer
547
views
Head loss for T junction diverging water pipes
I am writing to ask for help with a T-junction pipe problem. Attached picture shows the pipe configuration. The schematic shows a large pipe with ID 16.5mm and smaller 4mm ID tubes connected to it. ...
- 1
0
votes
1
answer
390
views
Determining the headloss according to Darcy-Weisbach with pipes in parallel and series
Given the following situation:
Pipe A and B have a known and identical length and diameter, and are in parallel. I'm assuming the flow trough pipes A and B are also identical, as is the roughness of ...
- 3
1
vote
0
answers
339
views
Determining the Steady Discharge Between Two Reservoirs
A uniform pipeline, $5km$ in length, $100mm$ in diameter and with a
roughness size of $0.03mm$, conveys water between two reservoirs.
The difference in water level between the reservoirs is $...
0
votes
2
answers
642
views
Darcy-Weisbach Equation
I've come across two forms of the Darcy-Weisbach Equation, and each one seems to yield a different result when I am solving for $Q$ (flow).
$$h_{f}=\frac{\lambda Lv^{2}}{2gD}$$
$$h_{f}=\frac{f LQ^{...
- 41