Table 2.

Geometrical and physical properties of HGM for simulation.

Particle Size	Value
Average outer diameter D = $2R$ ($\mathsf{\mu }\mathrm{m}$)	58.64
wall thickness t ($\mathsf{\mu }\mathrm{m}$)	1.6
Thermal conductivity
Thermal conductivity of the gas $k_g$ (W/(mK))	0.023 [38]
Thermal conductivity of the solid wall $k_w$ (W/(mK))	1.03
Thermal conductivity of the matrix $k_c$ (W/(mK))	0.93