Pipe Flow Calculations Forum

Power of pump can be calculated as P = Q * (p1 - p2). Pressure drop is due to friction, local resistances and change in elevation between start and end of pipe. So, if you calculate pressure drop in pipe (p1 - p2) for some flow rate, you can also calculate power of pump for that flow rate. And that ...

What do you mean by pipe taps?
You have corner taps as selection also - if plate is between flanges and taps are on flanges itself.

Flow rate through pipe is established based on the energy (mainly pressure) difference from start to the end of pipe. If you have bigger pressure difference flow rate will be higher. If you have same pressure difference flow will be higher when resistances are lower. When you have the end of pipe un...

You can use calculator for change in elevation, but you have to enter that like pressure difference - like elevation difference of 10 m with water in pipe is pressure difference of 10 mWS. Flow regime is laminar or turbulent depending on the flow itself. You do not need to worry about it. Calculator...

Here is what I have with pressure drop calculator just for sudden expansion: 1. volume flow rate (q): q : 0.75 m3/s 3. pipe length (L): L : 1 mm 4. pipe diameter (D): D : 120 mm 5. pipe roughness (kr): kr : 0.1 mm 6. density (ρ): ρ : 1.293 kg/m3 7. kinematic viscosity (ν): ν : 17.3 mm2/s 8. dynamic ...

I am not sure that I understand you correctly. You have 100 m long gas pipe line 4" and 4" governor before the burner? The governor has 1.2 bar inlet pressure when burner is off? The governor lets 400 mbar with burner off? When burner starts, pressure goes down to 200 mbar after the govern...

You can't have two flow rates in one pipe with incompressible fluid like water, so with pump flow dropping from 50 to 40, pipe flow rate will change as well with speed of sound from point a to point b.

Actual flow rate you can calculate based on the height difference and pipe diameter that you have. You can't tell at the start that you will have 100 l/s. That you can calculate. Here is report from calculation using pressure drop calculator: Pipe pressure drop calculator 1. volume flow rate (q): q ...

Hi Adam, As you can see in calculator flow rate has symbol of - qn and it is for normal conditions (p=101325 Pa, T=0) so density is also at that condition. I can also add option to enter flow at p1 or p2 but I think it is not very convenient way for calculation - I think much more often you will not...

For me it makes no sense also.
Where did you get purge rate of 0.00311 min/meter?