An Analysis on Fully Developed Laminar Heat Transfer in Concentric Annuli with Axially Moving Cores : The Cases of the First and Second Kind Boundary Conditions

Fundamental solutions of the first and second kind boundary conditions were obtained analytically for the fully developed laminar heat transfer in a concentric annulus with an axially moving core. The heating conditions for the first and second kind are respectively (1) constant and uniform but different wall temperatures are specified on each wall and (2) on one wall, constant axial as well as peripheral wall heat fiux is specified and the other is insulated. The effects of the relative velocity of the core and the radius ratio on the temperature and Nusselt numbers have been investigated