Symbol

Physical quantity

Physical dimension

P

Pressure

[M∙L1∙t2]

T

Temperature

[T]

M

Mass

[M]

ρ

Density

[ML3]

V

Volume

[L3]

Γ

Surface

[L2]

Λ

Latent heat

[L2∙t2]

r

Specific gas constant

[L2∙T1∙t2]

ϕ

Porosity

[-]

S

Saturation

[-]

μ

Viscosity

[M∙L2∙t1]

u

Fluid flow rate

[L∙t1]

v

Fluid velocity

[L∙t1]

K

Absolute permeability

[L2]

k r β

Relative permeability of β

[-]

T

Stress tensor

[M∙L1∙t2]

g

Acceleration of gravity

[L∙t2]

γ

Surface tension

[M∙t2]

κ

Mean curvature

[-]

Notation

β

Phase

v

Vapor

l

Liquid

H2O

Pure water

*

Clapeyron

mol

Molar

r

Relative

c

Capillary

w

Wetting

nw

Non-wetting