Analysis of steady state graphite blankets

A computer code was developed for two-dimensional, nonsteady heat conduction in heterogeneous, anisotropic solids with non-uniform volumetric internal heating. Fixed boundary temperatures, thermal radiation and arbitrary heat flux boundary conditions are accommodated. Coolant tubes are taken into account by prescribing fluid temperatures and heat transfer coefficients. With regard to coolant tubes, we allow for: (a) heat capacitance in the tube wall, coolant tube in contact with the structural material; (b) zero heat capacitance in the tube wall, coolant tube in contact with the structural material; and (c) zero heat capacitance in the tube wall, radiation gap between the wall and structure. The finite difference equations are solved by the standard explicit method. The following topics are developed: (a) the finite difference equations for internal nodes; (b) detailed development of thermal radiant flux expressions with view-factor determination; (c) thermal radiation boundary conditions coupled with conduction equation; and (d) solution method