Physical properties¶
Specify physical constants. How this is done depends mostly on your choice of multi phase solver (see Multi phase solver). A single phase example:
physical_properties:
g: [0, 0, 0]
nu: 0.001
rho: 1.0

g
The acceleration of gravity given as a list of numbers. The length of the list must match the number of spatial directions, e.g. 2 or 3. Use
[0, 9.81]
in 2D and[0, 0, 9.81]
in 3D for “standard” gravity.
VOF two phase properties¶

nu0, rho0
The kinematic viscosity and density of fluid 0

nu1, rho1
The kinematic viscosity and density of fluid 1
For a water/air simulation fluid 0 is typically water and corresponds to
VOF colour function value 1.0
while fluid 1 is typically air and
corresponds to VOF colour function value 0.0
.
Variable density properties¶

nu
The kinematic viscosity of both fluids (single value)

rho_min, rho_max
The range of allowable densities. Give one number for each of these settings.