Sensitivity analysis in the heat transfer in a finned nuclear fuel element
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2002
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CONGRESSO BRASILEIRO DE ENGENHARIA E CIENCIAS TERMICAS, 9.
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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 for the case of interest. Both, the direct model and the resultant equations of the perturbative
formalism are solved. The convective heat flow rate of the fin and the average excess temperature were the response fitnctionals
studied. The half thickness, the thermal conductivity and heat transfer coefficients, and the excess temperature al the base of the fin
were the parameters of interest for the sensitivity analysis. The results obtained through the perturbative method and the direct
variation had, in a general form and within acceptable physical limits, good concordance and excellent representativeness for the
analyzed cases. It evidences that the differential formalism is an important tool for the sensitivity analysis and also it validates the
application of the methodology in heat transmission problems on extended surfaces. The method proves to be necesscay 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 in the heat transfer in a finned nuclear fuel element. In: CONGRESSO BRASILEIRO DE ENGENHARIA E CIENCIAS TERMICAS, 9., 15-18 out, 2002, Caxambu, MG. Proceedings... p. 1-9. Disponível em: http://repositorio.ipen.br/handle/123456789/16944. 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.