If the experiment is very carefully arranged so that the pipe is very smooth and there are no disturbances to the velocity and so on, higher values of Re can be obtained with the flow still in a ...

the velocity increases. This is exactly similar to what happens with constant-density flow through a duct or a pipe --- if the area decreases, the velocity increases so that the volume flow rate is ...

The Vortab Company’s product line of inline and insertion type flow conditioners nearly eliminates the upstream straight pipe ...