I’ve never understood the relationship between flow velocity and flow rate in pipelines – it’s something I still can’t figure out from my studies of chemical engineering principles!
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The flow velocity in a pipe equals flow rate divided by cross-sectional area. The flow velocity at the pump outlet decreases after passing through a certain length of pipe, but why doesn’t the flow rate change? Also, how is the average velocity determined when calculating the pressure drop loss in pipelines?
The pump outlet usually has reducing and enlarging nozzles; as the size increases, the cross-sectional area grows and the flow velocity decreases.
If you don’t practice by drafting more on your own, you definitely won’t master these principles of chemical engineering
If you’re asking about gases, maybe no one has said yet that you haven’t learned it well enough
I’m not quite sure about this either; you can check the relevant manuals – there should be formulas and things of that kind there
If the cross-sectional area of the pipe remains unchanged, how is it possible for the flow velocity to decrease? And if the flow velocity decreases, how is it possible for the flow rate to stay the same?……
The flow velocity in a pipe with the same cross-sectional area remains constant; otherwise, how could a differential pressure flow meter measure the flow rate?
Generally, there are requirements regarding flow rate, especially for materials; the requirements for water and steam are relatively lower.