Formulas for calculating pipe flow velocity
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As the title suggests, I would like to know how the formula for calculating pipe flow velocity is expressed The pressure and pipe diameter are known; please provide a detailed answer. Thank you
It has no direct relation to pressure, but rather to the pressure difference. The flow velocity in a horizontal straight pipe can be calculated directly using √(2△P/ρ).
If there is flow rate available, the velocity can be calculated by simply dividing the flow rate by the cross-sectional area. If this information is not known, then it is necessary to know the pressure difference P before and after the pipe, the length of the pipe L, and the hydraulic resistance S of the pipe (which can be obtained from tables using the inner diameter D of the pipe and the roughness n of its inner walls). In that case, the flow rate Q can be calculated as Q = ^(1/2), allowing for an approximate determination of the flow rate
This formula is too complex; the question setter can’t understand it. It is also not suitable for pipelines with flow-limiting devices
Damn, why does it seem to me that this is calculating the flow velocity based on dynamic pressure?
This seems to be relatively reliable, but it’s complex and prone to errors
Thank you, but it’s a bit hard to understand the confirmation
What is the unit? Could you share the basis for this calculation? Thank you