There, it is possible to observe that the solution stabilizes at t = 0.159 s and that the
average value of the pressure at inlet is p = 11.8239 · 900 = 10641.51 Pa. Therefore,
the pressure drop within the pipe due to the viscous forces is 1641.51 Pa.
The same utility can be used to compute average vector fields such as |U|. For
instance, to corroborate that the continuity equation is fulfilled, type: