Heat Transfer Internal Flow 1

heat transfer in pipes and ducts, internal flow, review fluid mechanics

[@TemmieTumpter]

At 16:11 it looks like the mu term disappears from the equation. Is this an error or does something about applying no-slip conditions cause the viscosity to disappear from the overall equation?

[@randallmanteufel6411]

you are correct, "mu" is missing. u = R^2/(4*mu)*(-dP/dx)*(1-r^2/R^2). Then u_max = R^2/(4*mu)*(-dP/dx). thanks

[@achillesheel12]

professor while writing navier stokes equation full equation should be written then our assumptions and physics of the problem eliminates the remaining terms from navier stokes equation for cylindrical coordinates