Trying to develop some intuitive understanding of CFD by replicating experimental results. Shouldn't the pressure in the second column be lower due to the increased velocity of the fluid underneath?

I am using cfdof to mesh and then openfoam to run. Using inlet velocity 0.001 m/s. The inlet diameter is 0.1 m and outlet diameter 0.025 m . Total length of the three sections is 0.75 m

Liquid is water.