α

Volume Fraction

ρ

Density of Fluid (kg/m³)

v

Velocity (m/s)

p

Pressure (Pa)

Stress-strain Tensor (Pa)

Acceleration due to Gravity (m/s²)

μ

Viscosity (kg/m∙s)

h

Specific Enthalpy (J/kg)

q

Heat Flux (J)

Gradient

β

Coefficient of Thermal Expansion

Y_i

Mass Fraction of Species

N

Total Number of Phases

R

Rate of Reaction

T

Temperature (K)

K

Rate Constant

j

Species

t

Turbulent

r

Reaction

p

Phase

s

Solids

q

Phase