ESTIMATION FOR TEMPERATURE DISTRIBUTION IN A HEAT-GENERATING CYLINDERWITH MULTIPLE HOLES

Specimen holders with multiple holes are often used in capsules for ma terial irradiation experiments. In reactor, all parts of capsule are h eat sources due to gamma-heating. Then, in thermal analysis, such cyli nders must be considered as heat generators with multiple holes. To es timate, for instance, the maximum temperature of test pieces inserted in the holes, temperature distribution in the cylinder must be analyse d. Then, it was tried to obtain an analytical expression of the temper ature distribution in the cylinder. An equation was obtained by solvin g the steady-state heat conduction equation with practical assumptions . The equation will be useful in design and safety evaluation of capsu les for material irradiation experiments.