1 Viscous flows in pipes
Our intension here is generalized the one-dimensional Bernoulli equation for viscous flow.When
the viscosity of the fluid is taken into account total energy head H = v2
2g + p
rg +z is no longer
constant along the pipe. In direction of flow, due to friction cause by viscosity of the fluid we
have v21
2g + p1
rg +z1 >
v22
2g + p2
rg +z2. So to restore the equality we must add some scalar quantity to
the right side of this inequality