Is it possible to determine the flow velocity given the known pressure and pipe diameter?
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It is common in practice to encounter situations where the water pressure and pipe diameter are known, but it is difficult to determine the flow velocity; is there any table from which this can be obtained?
It is impossible to determine the flow rate just by knowing the water pressure and pipe diameter, unless the flow volume is known. Additionally, if the pipe diameter and the pressures at two points are known, it is theoretically possible to determine the flow rate and velocity by using the pressure difference, but the errors will be relatively large.
Pressure, pipe diameter, flow velocity, and flow rate – three of these four variables must be known in order to determine the fourth!
Don’t you know that once you know the pipe diameter and flow velocity, you can directly calculate the flow rate?
In my opinion, if you know the pipe diameter, flow velocity, and flow rate, it’s possible to calculate one of these values; reverse-calculation using pressure seems unnecessary in some cases