Trans. of KNS Autumn meeting , CD-ROM, 2006.
The thermal hydraulic (T/H) conditions - regional temperatures and corresponding densities - are required to calculate the nuclear parameters such as k and power densities of the nuclear reactor core. Because these T/H conditions are priori-unknown and dependent on power distribution, the T/H feedback calculation should be conducted. In the Monte Carlo (MC) T/H Feedback algorithm, the updates of power densities and T/H conditions are repeated until the temperature distribution converges. Because the iterative MC calculations are very time consuming, it is important to use an efficient T/H feedback algorithm. The objective of this paper is to develop an efficient temperature convergence criterion. And we apply the new criterion to the KALIMER pin and fuel assembly problems.
