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AbstractAbstract
[en] A new method for the calculation of sensitivity coefficients is developed. The new method is a combination of two methodologies used for calculating these coefficients, which are the differential and the generalized perturbation theory methods. The proposed method utilizes as integral parameter the average flux in an arbitrary region of the system. Thus, the sensitivity coefficient contains only the component corresponding to the neutron flux. To obtain the new sensitivity coefficient, the derivates of the integral parameter, φ(ξ), with respect to σ are calculated using the perturbation method and the functional derivates of this generic integral parameter with respect to σ and φ are calculated using the differential method. The new method merges the advantages of the differential and generalized perturbation theory methods and eliminates their disadvantages. (author)
Original Title
Uma combinacao entre os metodos diferencial e da teoria de perturbacao para o calculo dos coeficientes de sensibilidade
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Associacao Brasileira de Energia Nuclear, Rio de Janeiro, RJ (Brazil); [800 p.]; 2000; p. 286-290; 12. Brazilian national meeting on reactor physics and thermal hydraulics; 12. Encontro nacional de fisica de reatores e termo-hidraulica; Rio de Janeiro, RJ (Brazil); 15-20 Oct 2000; 8. General congress on nuclear energy; 8. Congresso geral de energia nuclear; Rio de Janeiro, RJ (Brazil); 15-20 Oct 2000; 5. Brazilian national meeting on nuclear applications; 5. Encontro nacional de aplicacoes nucleares; Rio de Janeiro, RJ (Brazil); 15-20 Oct 2000; Available from the Library of the Brazilian Nuclear Energy Commission, Rio de Janeiro; 7 refs.
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