Questions tagged [pipelines]
The pipelines tag has no usage guidance.
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Shearing Stress at the Boundaries of two infinite Planes
This is a worked example on a book I am reading (Fundamentals of fluid Mechanics).
He then asks
"Can you explain the change in sign? [Hint: Sketch a sheared fluid particle adjacent to the top ...
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Calculate fan power
I was wondering how to calculate the required fan power for the following air pipe network. Other losses besides friction is not calculated for.
Known parameters:
Fan provided flow, VA = 3000 m3/h
...
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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. ...
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Pipe Invert Elevation
Can someone please help and explain if the invert elevation of the pipe is calculated as 192+2+10? or 192+2+10+0.6667 (8" pipe)? Or 192+2+10+1 (measured to bottom)? Sketch is not to scale.
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Why is the friction factor in laminar flow independent of pipe roughness?
The Darcy friction factor is defined as:
$$f_D =\frac{64}{Re}$$
with $Re$ I mean Reynolds number (global).
I was wondering why Darcy in laminaire flow is independent of pipe roughness (wall roughness)?...
user14407
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How to design internal wall separation in the PVC tube to use it as a water tanker
I am working on design of the column which contains the water tanker and the pump + electronics at the bottom.
I have tried different solutions and they failed. I would like to know your advice on ...
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Determining required pressure drop for choked flow conditions to be met
I have pipework system with an inlet pressure, $P_0$, which passes from a pipeline of fixed diameter, $D_0$, through a tee with reducer to a smaller diameter pipe, $D_1$, before returning to another ...
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Divide Flow and Maintain Pressure
Im in the process of building an espresso machine from readily available parts. I have a solenoid pump that supplies pressurized hot water to the coffee grounds. I want to be able to tune the pressure ...
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Airsoft BB Funnel Design - Electric funnel jam solution?
I'm working on a design to feed Airsoft BB's through a funnel. A simple gravity fed system (ie. I don't want to force them out at speed) but every now and again the BB's get jammed at the end of the ...
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How do you determine how many pumps you need in a pipeline?
I am working on a pipeline design scenario and I am trying to determine how many pumps I need. In addition to this diagram, I'm given a flow rate range and an acceptable velocity to also determine the ...
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Linear pneumatic actuator opening time - pressurise connection pipe
I would like to estimate the time needed to open a linear single-acting pneumatic actuator.
The actuator's piston is loaded with a spring pushing downwards and the operating fluid (air or nitrogen) ...
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Heat Loss through a run of insulated piping
I've been racking my head around calculating the amount of heat loss still water will experience through a run of insulated piping. The water in the tank is maintained at roughly 550°F saturated, and ...
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Calculating the flow rate of a siphon system
What i am looking for:
I am looking for a formular to calculate the water output in $l/s$.
My goal is to match a pump (pumping the water back up) with the following setup, to keep it going with as ...
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Finding Horizontal and Vertical Force on Bending Pipe
I did a Civil Engineering course some years ago and from my textbook I had a question on a bending pipe.
The purpose of this question is to see if the way that I have calculated this is correct, as ...
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Find Torque and Force on Pipe with Bend
I did a Civil Engineering course some years ago and from my textbook I had a question on a pipe with a bend.
Now I think I have the part of the question on force correct, but I am not sure how the ...
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