Analytical estimation of the effective thermal conductivity of a granular bed in a stagnant gas including the Smoluchowski effect

Cyclic thermo-mechanical performance of granular beds: Effect of elastoplasticity

“…Specifically, it is assumed in the previous model that C s ct is a function of β ij and implicitly related to the gas pressure. When β ij <1, C s ct is underestimated as 0.44πK g R * β ij 2 [12] compared with the Eq. ( 13).…”

“…Notably, the decoupling of gas and solid contributions in Eqs. (13) (16), which is slightly different from the expressions of the previous one [12], guarantees that the Smoluchowski effect can only function on the contribution of the interstitial gas rather than the whole contact Fig. 3.…”

“…Therefore, we develop the thermal network based on the Batchelor and O'Brien analytical solu tion [25] considering the particle particle or particle gas particle con duction and the Smoluchowski effect [48]. The effectiveness of this conceptual model has been validated in the previous work [39], and here we modify the model reported in [12] to calrify the phase contri bution (fluid and solid) separately. Specifically, as shown in Fig.…”

Modeling and validation of heat transfer in packed bed with internal heat generation

“…Similar DEM approach was used by Gan et al 32 for a better understanding of overall thermomechanical responses of the breeder units with internal heat source. The recent development in the modeling of breeder pebble bed with the help of analytical approach and DEM also gives an insight into heat transfer with internal heat generation 33‐36 …”

“…The recent development in the modeling of breeder pebble bed with the help of analytical approach and DEM also gives an insight into heat transfer with internal heat generation. [33][34][35][36] In a fusion reaction inside the thermoblanket module, the energy will be released due to neutron irradiation on lithium ceramic pebbles, resulting in internal heat generation of the bed. The bed should have sustainable thermophysical properties to transfer this heat efficiently.…”