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Your search keyword '"Alexandre D. Caldeira"' showing total 2 results
Start Over Author "Alexandre D. Caldeira" Topic mathematical analysis
2 results on '"Alexandre D. Caldeira"'

1. Application of the PN method to the matrix form transport equation

Author

Alexandre D. Caldeira

Subjects
Nuclear Energy and Engineering, Group (mathematics), Neutron flux, Astrophysics::High Energy Astrophysical Phenomena, Mathematical analysis, Neutron, Two sample, Irradiation, Matrix form, Convection–diffusion equation, Dose conversion, Mathematics
Abstract

In this note, the neutron group fluxes are calculated through the implementation of the matrix form transport equation solution by the P N method and the main objective is to obtain accurate numerical results. Some results for two sample problems are graphically presented. A neutron flux to dose conversion is also proposed to simulate irradiation planning.

Published
2005
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2. On the maxwellian+1/E+fission-spectrum weighting function of NJOY 99.90 system’s GROUPR module

Author

Alexandre D. Caldeira

Subjects
Nuclear Energy and Engineering, Break point, Fission, Mathematical analysis, Spectrum (functional analysis), Nuclear data, Function (mathematics), Nuclear Experiment, Energy (signal processing), Weighting, Mathematics
Abstract

It is not possible to generate correct multigroup nuclear data with the GROUPR module of the NJOY system version 99.90 when the Maxwellian + 1/E + fission-spectrum weighting function is specified. It was detected that the calculation stops in the energy group that contains the break point between 1/E weighting and fission-spectrum weighting. A possible solution to bypass the error is proposed.

Published
2005
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