ANALYSIS: The prescribed velocity and temperature profiles, (m/s and K, respectively)are u(r)=0.11(rn) T(r)=3448+75.0(rr02-18.8(r (1,2) For incompressible flow with constant c, in a circular tube, from Eq. 8. 27, the mean temperature and un the mean velocity, from Eq. 8.8 are, respectively 25u()r()r u(r).rdr Substituting the velocity profile, Eq (1), into Eq (4)and integrating, find Substituting the profiles and um into Eq. (3), find 4{38()+088(+080) Tn=417240+1875-3131820+1250-235}=367K The velocity and temperature profiles appear as shown below. Do the values of um and Tm found above with th ive profiles as you thought? Is the fluid being heated or cooled? 008 E> 004 002 0 002040608 002040608 Radial coordinate riro Radial coordinate r/ro Heat Transfer Su Yongkang School of Mechanical EngineeringHeat Transfer Su Yongkang School of Mechanical Engineering # 8