TY - GEN
T1 - Assessment of the coarse-mesh finite-difference method with the multicell methodology in RFSP for ACR-1000®
AU - Shen, W.
AU - Phelps, B.
PY - 2009
Y1 - 2009
N2 - Though the WIMS-AECL/RFSP-IST suite of codes has been in widespread use for design, safety and operational analysis over the years in the CANDU® industry, it is necessary to assess its adequacy for future CANDU applications, especially when new fuels and new reactors are under development. Use of the coarse-mesh finite-difference method in RFSP 2-group neutron-diffusion calculations has drawn particular attention from the designers and regulators, especially for the application to ACR-1000®. This paper presents assessment results between WIMS-AECL/RFSP (with various lattice sub-meshes with and without using the multicell methodology) and MCNP5 full-core calculation for the ACR-1000. The assessment results show that the agreement in the channel power between RFSP and MCNP is significantly improved when the multicell methodology is used in the RFSP calculations. The assessment also shows that the coarse-mesh finite-difference method (FDM) gives consistently smaller differences than the fine-mesh FDM. The reason for the better performance of the coarse-mesh FDM over the fine-mesh FDM is also discussed in the paper.
AB - Though the WIMS-AECL/RFSP-IST suite of codes has been in widespread use for design, safety and operational analysis over the years in the CANDU® industry, it is necessary to assess its adequacy for future CANDU applications, especially when new fuels and new reactors are under development. Use of the coarse-mesh finite-difference method in RFSP 2-group neutron-diffusion calculations has drawn particular attention from the designers and regulators, especially for the application to ACR-1000®. This paper presents assessment results between WIMS-AECL/RFSP (with various lattice sub-meshes with and without using the multicell methodology) and MCNP5 full-core calculation for the ACR-1000. The assessment results show that the agreement in the channel power between RFSP and MCNP is significantly improved when the multicell methodology is used in the RFSP calculations. The assessment also shows that the coarse-mesh finite-difference method (FDM) gives consistently smaller differences than the fine-mesh FDM. The reason for the better performance of the coarse-mesh FDM over the fine-mesh FDM is also discussed in the paper.
UR - https://www.scopus.com/pages/publications/77952184618
M3 - 会议稿件
AN - SCOPUS:77952184618
SN - 9781615676798
T3 - Canadian Nuclear Society - 30th Annual Canadian Nuclear Society Conference and 33rd CNS/CNA Student Conference 2009
SP - 2003
EP - 2016
BT - Canadian Nuclear Society - 30th Annual Canadian Nuclear Society Conference and 33rd CNS/CNA Student Conference 2009
T2 - 30th Annual Canadian Nuclear Society Conference and 33rd CNS/CNA Student Conference 2009
Y2 - 31 May 2009 through 3 June 2009
ER -