5.3 Discrete Modeling of Pebble Radiation
305
Fig. 5.58 Particle temperature distribution at different non-dimensional time: a τ = 0, b τ =
1 × 10 4 , c τ = 3 × 10 4 , and d τ = 6 × 10 4
ones, the temperature of point D is higher than point C, since the heat is only removed
at the bottom and the point D is in the stagnant region in the current case.
5.3.11 Short Summary
Modeling Effective Thermal Conductivity (ETC) of thermal radiation was performed
for nuclear-packed pebble beds. Thermal radiation in a three-dimensional packed
305
Fig. 5.58 Particle temperature distribution at different non-dimensional time: a τ = 0, b τ =
1 × 10 4 , c τ = 3 × 10 4 , and d τ = 6 × 10 4
ones, the temperature of point D is higher than point C, since the heat is only removed
at the bottom and the point D is in the stagnant region in the current case.
5.3.11 Short Summary
Modeling Effective Thermal Conductivity (ETC) of thermal radiation was performed
for nuclear-packed pebble beds. Thermal radiation in a three-dimensional packed