TY - GEN
T1 - Exponential function expansion nodal diffusion method
AU - Li, Yunzhao
AU - Wu, Hongchun
AU - Cao, Liangzhi
AU - Chen, Qichang
PY - 2010
Y1 - 2010
N2 - An exponential function expansion nodal diffusion method is proposed to take care of diffusion calculation in unstructured geometry. Transverse integral technique is widely used in nodal method in regular geometry, such as rectangular and hexagonal, while improper in arbitrary triangular geometry because of the mathematical singularity. In this paper, nodal response matrix is derived by expanding detailed nodal flux distribution into a sum of exponential functions, and nodal balance equation can be obtained by strict integral in the polygonal node. Numerical results illustrate that the exponential function expansion nodal method in rectangular and triangular block can solve neutron diffusion equation in regular and irregular geometry.
AB - An exponential function expansion nodal diffusion method is proposed to take care of diffusion calculation in unstructured geometry. Transverse integral technique is widely used in nodal method in regular geometry, such as rectangular and hexagonal, while improper in arbitrary triangular geometry because of the mathematical singularity. In this paper, nodal response matrix is derived by expanding detailed nodal flux distribution into a sum of exponential functions, and nodal balance equation can be obtained by strict integral in the polygonal node. Numerical results illustrate that the exponential function expansion nodal method in rectangular and triangular block can solve neutron diffusion equation in regular and irregular geometry.
KW - EFEN
KW - Rectangular nodal method
KW - Triangular nodal method
UR - https://www.scopus.com/pages/publications/80053241656
U2 - 10.1115/ICONE18-29447
DO - 10.1115/ICONE18-29447
M3 - 会议稿件
AN - SCOPUS:80053241656
SN - 9780791849309
T3 - International Conference on Nuclear Engineering, Proceedings, ICONE
BT - 18th International Conference on Nuclear Engineering, ICONE18
T2 - 18th International Conference on Nuclear Engineering, ICONE18
Y2 - 17 May 2010 through 21 May 2010
ER -