from BSL 10B9.

Plug flow with forced-convection heat transfer. Very thick slurries and pastes sometimes move in channels almost as a solid plug. Thus, one can approximate the velocity by a con- stant value v, over the conduit cross section. (a) Rework the problem of 510.8 for plug flow in a circular tube of radius R. Show that the temperature distribution analogous to Eq. 10.8-31 is in which [ = ~Z/~?~V,R~, and @ and are defined as in 510.8. (b) Show that for