Calculation of multi-dimensional temperature field in the areas of radioactive waste underground disposal

All the countries that have ever run a nuclear reactor face the problem of the nuclear waste disposal. The spent fuel generated by the nuclear reactors must be processed and nuclear waste isolated using any proven method, even if the country had afterwards shut down its reactors and reduced national nuclear program. The object of the given work is a calculation of multi-dimensional temperature distribution inside the bed, which the nuclear waste are pumped in. It allows to compute the pressure field inside the ground bed surrounding the waste disposition area and consequently to estimate the extent of the diffusion of the radioactive nuclides out of the isolate area