Table 2. Hydraulic parameters adopted in...

Table 2.

Hydraulic parameters adopted in this study

Definition parameter	Symbol	Value
Material properties
Reference porosity	$ϕ_{0}$	0.322
Reference intrinsic permeability	$K_{0}$	2.1 × 10⁻¹⁹ m² (Piña Díaz, 2011)
Tortuosity	$τ$	0.18 (Jacops et al., 2013)
Model parameter of WRC	A	0.328 MPa
Model parameter of WRC	n	1.346
Model parameter of WRC	$ψ$	2.90
Fluid properties
Reference liquid water density	$ρ_{w, 0}$	997 kg m $^{- 3}$
Water dynamic viscosity	$μ_{w}$	8.9 $\times 10^{- 4}$ Pa s
Water compressibility coefficient	$1 / χ_{w}$	4.54 $\times 10^{- 10}$ Pa $^{- 1}$
Referenced diffusion coefficient of water vapour	$D_{g, 0}^{w}$	4.9 $\times 10^{- 5}$ m s $^{- 2}$ (Lide, 2004)
Diffusion coefficient of dissolved hydrogen	$D_{l}^{H_{2}}$	4.8 $\times 10^{- 9}$ m s $^{- 2}$ (Lide, 2004)
Hydrogen molar mass	$M^{H_{2}}$	1.008 g m $^{- 3}$
Hydrogen dynamic viscosity	$μ_{H_{2}}$	1.825 $\times 10^{- 5}$ Pa s
Henry coefficient	H	0.0193

Definition parameter	Symbol	Value
Material properties
Reference porosity	$ϕ_{0}$	0.322
Reference intrinsic permeability	$K_{0}$	2.1 × 10⁻¹⁹ m² (Piña Díaz, 2011)
Tortuosity	$τ$	0.18 (Jacops et al., 2013)
Model parameter of WRC	A	0.328 MPa
Model parameter of WRC	n	1.346
Model parameter of WRC	$ψ$	2.90
Fluid properties
Reference liquid water density	$ρ_{w, 0}$	997 kg m $^{- 3}$
Water dynamic viscosity	$μ_{w}$	8.9 $\times 10^{- 4}$ Pa s
Water compressibility coefficient	$1 / χ_{w}$	4.54 $\times 10^{- 10}$ Pa $^{- 1}$
Referenced diffusion coefficient of water vapour	$D_{g, 0}^{w}$	4.9 $\times 10^{- 5}$ m s $^{- 2}$ (Lide, 2004)
Diffusion coefficient of dissolved hydrogen	$D_{l}^{H_{2}}$	4.8 $\times 10^{- 9}$ m s $^{- 2}$ (Lide, 2004)
Hydrogen molar mass	$M^{H_{2}}$	1.008 g m $^{- 3}$
Hydrogen dynamic viscosity	$μ_{H_{2}}$	1.825 $\times 10^{- 5}$ Pa s
Henry coefficient	H	0.0193