수퍼노달 해석법을 위한 균질화 방법 연구 = Homogenization Method for PWR Super-Nodal Analysis

다국어 초록 (Multilingual Abstract)

The objective of this research is to develop computationly accurate and efficient supernode analysis theory and nodal homogenization method for PWR based on the revised QUANDRY code.
The nodal homogenization schemes are generalized for application to heterogeneous two-dimensional problems for treatment of the baffle and reflector regions in nodal calculations and determination of homogenized nodal parameters in supernode. Homogenization method are investigated for assembly-wise and color-set-wise homogenization in EPRI-9 and ZION-1 reactor problems.
The homogenization techniques of EPRI-9 problem showed good accuracy compared with PDQ and revised QUANDRY results - below 5% error. For the two homogenization method in ZION-1 reactor, color set wise method is more accurate than assembly wise method in more and peripheral regions.