g Calculate the jet Reynolds number based on the jet exit velocity (the velocity of the jet as it leaves the tube) and the diameter of the tube. Note: Find the jet exit velocity from the air flow rate measured by the rotameter, do not try to measure it with the Pitot tube. Note: Make sure to report velocity in m/s. 9. Plot the jet centerline velocity as a function of the nondimensional position downstream of the exit. For a jet flowing into still surroundings of the same substance, the centerline concentration will decay as 1/x. Fit your data to: Velocity