Artículo de revista
Novel fluctuation reduction procedure for nuclear reactivity calculations based on the discrete fourier transform method
Fecha
2019-05-05Registro en:
Suescún-Díaz, D., Lozano-Parada, J. H., & Rasero-Causil, D. A. (2019). Novel fluctuation reduction procedure for nuclear reactivity calculations based on the discrete fourier transform method. Journal of Nuclear Science and Technology, 56(7), 608-616
1881-1248 (en línea)
0022-3131 (impresa)
Autor
Suescún-Díaz, Daniel
Lozano Parada, Jaime Humberto
Rasero, Diego
Institución
Resumen
A new method for calculating nuclear reactivity based on the Discrete Fourier Transform (DFT) – with two filters: a first-order delay low-pass filter and a Savitzky-Golay filter – is presented. The reactivity is calculated from an integrodifferential equation known as the inverse point kinetic equation, which contains the history of neutron population density. The new method can be understood as a convolution between the neutron population density signal and the response to the characteristic impulse of a linear system. The proposed method is based on the discrete Fourier transform (DFT) that performs a circular convolution. The fast Fourier transform algorithm (FFT) with the zero-padding technique is implemented to reduce the computational cost