5.3 Discrete Modeling of Pebble Radiation
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Fig. 5.45 Packing and Voronoï tessellations of the multi-component packed pebble beds (x is
the volume percentage in all particles): a x 1 = 0.4015, d 1 = 60 mm; x 2 = 0.5985, d 2 = 90 mm;
b x 1 = 0.33, d 1 = 60 mm; x 1 = 0.67, d 2 = 120 mm; c x 1 = 0.2104, d 1 = 60 mm; x 2 = 0.3919,
d 2 = 90 mm; x 3 = 0.3977, d 3 = 120 mm