ABSTRACT
In many cases, it is difficult to describe in a complete and quantitative way the problems set up in engineering. The velocity laws that govern the processes studied may not be exactly known when the behavior of static fluids is studied. However, the behavior of moving fluids sets up complicated problems to be quantified. The work required to pump a fluid through a conduit depends on the momentum losses experienced by the fluid rubbing along the walls, on the circulation regime, and on the type and nature of the fluid.
