Sensitivity analysis to a RELAP5 nodalization developed for a typical TRIGA research reactor |
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| Authors: | Patrícia A.L. Reis Antonella L. Costa Claubia Pereira Clarysson A.M. Silva Maria Auxiliadora F. Veloso Amir Z. Mesquita |
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| Affiliation: | 1. Departamento de Engenharia Nuclear, Universidade Federal de Minas Gerais, Av. Antônio Carlos No. 6627, Campus Pampulha, CEP 31270-901, Belo Horizonte, MG, Brazil;2. Instituto Nacional de Ciências e Tecnologia de Reatores Nucleares Inovadores/CNPq, Brazil;3. Centro de Desenvolvimento da Tecnologia Nuclear, Comissão Nacional de Energia Nuclear, Av. Antônio Carlos, 6627, Campus UFMG, Belo Horizonte, Brazil |
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| Abstract: | The main aim of this work is to identify how much the code results are affected by the code user in the choice of, for example, the number of thermal hydraulic channels in a nuclear reactor nodalization. To perform this, two essential modifications were made on a previously validated nodalization for analysis of steady-state and forced recirculation off transient in the IPR-R1 TRIGA research reactor. Experimental data were taken as reference to compare the behavior of the reactor for two different types of modeling. The results highlight the necessity of sensitivity analysis to obtain the ideal modeling to simulate a specific system. |
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