NUMERICAL INVESTIGATION OF THE TRANSIENT CONDUCTION IN A ROTATING CYLINDRICAL-SHELL EXPOSED TO AN INCIDENT TIME-VARYING HEAT-FLUX

The transient temperature distribution in a rotating cylindrical shell which is heated by an incident time varying heat flux (nuclear pulse) as well as a constant heat flux, is determined numerically by a finit e difference method. The shell is cooled by combined convection and th ermal radiation. The effects of cooling and rotation on the temperatur e distribution as well as the time- and space-dependence are shown. Ro tation provides a sinusoidal temperature variation in time for a fixed surface and circumferential position. Increased rotation reduces the maximum temperature in the shell and also provides a more uniform temp erature distribution in the circumferential direction.