TY - JOUR
T1 - Resonance Elastic Scattering and Interference Effects Treatments in Subgroup Method
AU - Li, Yunzhao
AU - He, Qingming
AU - Cao, Liangzhi
AU - Wu, Hongchun
AU - Zu, Tiejun
N1 - Publisher Copyright:
© 2016 Published by Elsevier Korea LLC on behalf of Korean Nuclear Society.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - Based on the resonance integral (RI) tables produced by the NJOY program, the conventional subgroup method usually ignores both the resonance elastic scattering and the resonance interference effects. In this paper, on one hand, to correct the resonance elastic scattering effect, RI tables are regenerated by using the Monte Carlo code, OpenMC, which employs the Doppler broadening rejection correction method for the resonance elastic scattering. On the other hand, a fast resonance interference factor method is proposed to efficiently handle the resonance interference effect. Encouraging conclusions have been indicated by the numerical results. (1) For a hot full power pressurized water reactor fuel pin-cell, an error of about +200 percent mille could be introduced by neglecting the resonance elastic scattering effect. By contrast, the approach employed in this paper can eliminate the error. (2) The fast resonance interference factor method possesses higher precision and higher efficiency than the conventional Bondarenko iteration method. Correspondingly, if the fast resonance interference factor method proposed in this paper is employed, the kinf can be improved by ~100 percent mille with a speedup of about 4.56.
AB - Based on the resonance integral (RI) tables produced by the NJOY program, the conventional subgroup method usually ignores both the resonance elastic scattering and the resonance interference effects. In this paper, on one hand, to correct the resonance elastic scattering effect, RI tables are regenerated by using the Monte Carlo code, OpenMC, which employs the Doppler broadening rejection correction method for the resonance elastic scattering. On the other hand, a fast resonance interference factor method is proposed to efficiently handle the resonance interference effect. Encouraging conclusions have been indicated by the numerical results. (1) For a hot full power pressurized water reactor fuel pin-cell, an error of about +200 percent mille could be introduced by neglecting the resonance elastic scattering effect. By contrast, the approach employed in this paper can eliminate the error. (2) The fast resonance interference factor method possesses higher precision and higher efficiency than the conventional Bondarenko iteration method. Correspondingly, if the fast resonance interference factor method proposed in this paper is employed, the kinf can be improved by ~100 percent mille with a speedup of about 4.56.
KW - Doppler Broadening Rejection Correction
KW - Fast Resonance Interference Factor
KW - Resonance Elastic Scattering Effect
KW - Resonance Interference Effect
KW - Subgroup Method
UR - https://www.scopus.com/pages/publications/84963549022
U2 - 10.1016/j.net.2015.12.015
DO - 10.1016/j.net.2015.12.015
M3 - 文章
AN - SCOPUS:84963549022
SN - 1738-5733
VL - 48
SP - 339
EP - 350
JO - Nuclear Engineering and Technology
JF - Nuclear Engineering and Technology
IS - 2
ER -