Viscous friction with Bernoulli We can include the effect of viscous friction in Ber...

Viscous friction with Bernoulli We can include the effect of viscous friction in Bernoulli’s equation by adding a term for the thermal energy generated by the viscous retarding force exerted on the fluid. Show that the term to be added to Eq. (11.5) for flow in a vessel of uniform cross-sectional area A is

where v is the average speed of the fluid of viscosity h along the center of a pipe whose length is l.