The maximum flow velocity in the pipeline?
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When the fluid in a pipe reaches a turbulent state, what is its maximum flow velocity? Assuming the fluid is water, are there any charts available to look up this limiting flow velocity?
What kind of limit is this? Is it a voltage drop? Is it still the issue of sound speed?
If you work in design, I’ve never heard of such a thing as a maximum flow rate; it seems pointless as well. As long as you have sufficient power, there’s no limit to the speed. The flow rate of water is generally set at 1-2 m/s
The claim that there is no limit to speed is incorrect; for details, please refer to the control valves section in the process manual. There is a limit value; when pressure is increased, the flow rate does not increase, that is, the velocity of flow also does not increase.
Based on allowable pressure drop and water velocity, it can be found in the handbook
For general circulating water, we usually choose the maximum flow rate of 3.5 m/s