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Nuclear News 40 Under 40 discuss the future of nuclear
Seven members of the inaugural Nuclear News 40 Under 40 came together on March 4 to discuss the current state of nuclear energy and what the future might hold for science, industry, and the public in terms of nuclear development.
To hear more insights from this talented group of young professionals, watch the “40 Under 40 Roundtable: Perspectives from Nuclear’s Rising Stars” on the ANS website.
Wm. A. Thomas, E. E. Lewis
Nuclear Science and Engineering | Volume 84 | Number 1 | May 1983 | Pages 67-71
Technical Note | doi.org/10.13182/NSE83-A17459
Articles are hosted by Taylor and Francis Online.
Two iterative algorithms are formulated for the solution of the within-group neutron diffusion equation in three dimensions. The algorithms are highly vectorizable, operating, respectively, on vectors with lengths of order N3/2 and of N2/2, where N is the number of mesh points in each of the three directions. The methods are well suited for present day pipeline computers. On a Cyber-205, they yield floating point operation rates that are higher by a factor of 20 to 30 than those achieved with scalar operations of the same algorithms. Convergence rates, as well as acceleration by two-cyclic overrelaxation, are investigated. For fixed source test problems with 30 X 30 X 30 grids, solutions are obtained in ∼1 s.