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Cell-level neutronics often involves absorber cells. Cell details are homogenized and the cylindrical cell is presented in box form to a higher level of calculation. Neglect of either the non-reflective nature of the cell boundary or its rectangulation will produce errors. Such errors may be avoided by including in the input to the higher-level calculation, namely the homogenized cross sections, flux...
A difficult problem of homogenizing over a cell region not bounded by a zero surface perpendicular current, or in other words, reflective conditions, is considered in this paper. One of the methods is to form flux ratios, for the homogenized region, between the fluxes obtained for the detailed, non-homogenized, layout of the region and the corresponding fluxes for the homogenized version of the region...
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