Cortex Effect on Vacuum Drying Process of Porous Medium

Table 1

Parameters used in the simulation process.

Parameter	Symbol	Value	Unit
Rate constant parameter	𝐾𝑟	1000	s^−1
Intrinsic permeability of inner medium	𝑘in	10^−13	m^2
Intrinsic permeability of cortex	𝑘cor	10^−13, 10^−14, 10^−15	m^2
Initial water saturation	𝑆𝑙0	0.5, 0.4, 0.3
Vapor pressure of vacuum drying chamber	𝑃𝑣𝑏	1000, 5000, 9000	Pa
Heat temperature	𝑇ℎ	323, 333, 343	K
Porosity	𝜀	0.615
Solid density	𝜌𝑠	476	kg m^−3
Air pressure of vacuum drying chamber	𝑃𝑎𝑏	0.001	Pa