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September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Ribbon-cutting scheduled for Advanced Manufacturing Collaborative
Energy Secretary Chris Wright will attend the opening of the Advanced Manufacturing Collaborative in Aiken, S.C., on August 7. Wright will deliver remarks and join Savannah River National Laboratory leadership and partners for a ribbon-cutting ceremony.
Yasuyoshi Kato
Nuclear Science and Engineering | Volume 104 | Number 4 | April 1990 | Pages 402-411
Technical Note | doi.org/10.13182/NSE90-A23738
Articles are hosted by Taylor and Francis Online.
Spatial mesh effects are studied for three-dimensional x-y-z neutron diffusion calculations. By applying the perturbation theory, it is analytically predicted that the errors in eigenvalue and control rod worth due to the mesh effect vary with the square of the mesh spacing, or inversely with the square of the mesh number, along the x, y, and z axes. The relationships are confirmed numerically by three-dimensional diffusion calculations in ZPPR-10A. Exact solutions are obtained from extrapolation to infinitely fine mesh spacing using these relations and results of coarse-mesh calculations.