Sensitivity analysis for heat transfer in a fin of a nuclear fuel rod
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Revista Brasileira de Pesquisa e Desenvolvimento
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Resumo
To carry out sensitivity analysis on a finned surface, the differential perturbative method is
applied in a heat conduction problem within a thermal system, made up of a one-dimensional
circumferential fin on a nuclear fuel element. The model is described by the temperature
distribution equation and the further specific boundary conditions. The adjoint system is used to
determine the sensitivity coefficients to the case of interest. Both, the direct model and the
perturbative formalism resultant equations are solved. The heat flow rate at a specific point of the
fin and the average temperature excess were the functional responses studied. The half thickness,
the thermal conductivity, the heat transfer coefficients and the heat flow at the base of the fin were
the parameters of interest to the sensitivity analysis. The results obtained through the perturbative
method and the direct variation presented, in a general form and within acceptable physical limits,
good concordance and excellent representativeness to the analyzed cases. One evidences that the
differential formalism is an important tool to the sensitivity analysis, and it validates the application
of the methodology in heat transmission problems on extended surfaces. The method proves to be
useful and efficient while elaborating thermal engineering projects.
Como referenciar
TITO, M.W.C.; LIRA, C.A.B.O.; BALINO, J.L.; ANDRADE LIMA, F.R. Sensitivity analysis for heat transfer in a fin of a nuclear fuel rod. Revista Brasileira de Pesquisa e Desenvolvimento, v. 4, n. 2, p. 309-314, 2002. Disponível em: http://repositorio.ipen.br/handle/123456789/7419. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.