Eq. first
Symbol
Definition
SI unit
cited
νrel
relative viscosity in Vand equation
Pa s
5
ρ
kg m3
density
4
ρs
kg m3
reference density
4
Φ
porosity
dimensionless
2
φ
airwater contact angle at solid
rad
54
Ψ
matric potential
m
53
Ψi
pi expressed in terms of height of liquid water
m
78
overbar symbol indicates a molar quantity
12
Θ
superscript indicating a standard substance
28
*
superscript indicating a pure substance
11
vii
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