Functions have been added to populationBalance to generate the
volumetric allocation coefficient etaV. This is needed if a volume or
mass source is to be conveniently distributed into the size groups. The
number-based allocation coefficient, eta, is still available and is
still used in all cases within populationBalance.
The allocation bounds handling has been removed. This, as it turns out,
was just an incomplete subset of having both number- and volume-based
allocation coefficients implemented.
An enumeration has been added to the arguments of the allocation
coefficient function, eta, to allow specification of how to allocate out
of bounds of the population balance size-groups. There are two options:
- "Clamp" will create an out-of-bounds allocation coefficient of exactly
one. This partitions unity across all size-space.
- "Extrapolate" will create an out-of-bounds allocation coefficient in
proportion to the ratio between the given size and the nearest
size-group size. This does not partition unity outside the range of
the size-groups.
The previous operation is equivalent to "Extrapolate".
It is not yet clear which method is preferable and under what
circumstances. More testing is required. The enumeration has been
created to facilitate this testing.
This change makes multiphaseEuler more consistent with other modules and
makes its sub-libraries less inter-dependent. Some left-over references
to multiphaseEulerFoam have also been removed.
