Influence of Spacer Grids Homogenization on Core Reactivity and Axial Power Distribution
نویسندگان
چکیده
The paper presents the influence of spacer grid homogenization during cross section generation on core reactivity and axial power distribution. Homogenization calculation was performed at fuel assembly level using FA2D code. first approach is to smear uniformly all centrally located grids along 120 inches carry out 2D transport calculation. second within 6 perform That composition then assigned closest in subdivision last analysed option do additional localization 2 height. afterward regular nodal modified PARCS 2.5 code for NPP Krško cycle 29. normalized distributions obtained by three different ways are compared quantify modelling. Similar comparison critical boron concentration. As expected larger present distribution (more details fine localization), with some offset global reactivity.
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ژورنال
عنوان ژورنال: Energija
سال: 2022
ISSN: ['0354-8651', '2812-7528']
DOI: https://doi.org/10.37798/2019682-3203