Replacing volRegion removes unnecessary functionality duplication and ensures
cell set selection is consistent between functionObjects, fvModels and
fvConstraints for user convenience and reducing the code maintenance overhead.
Description
General cell set selection class for models that apply to sub-sets
of the mesh.
Currently supports cell selection from a set of points, a specified cellSet
or cellZone or all of the cells. The selection method can either be
specified explicitly using the \c select entry or inferred from the
presence of either a \c cellSet, \c cellZone or \c points entry. The \c
select entry is required to select \c all cells.
Usage
Examples:
\verbatim
// Apply everywhere
select all;
// Apply within a given cellSet
select cellSet; // Optional
cellSet rotor;
// Apply within a given cellZone
select cellZone; // Optional
cellZone rotor;
// Apply in cells containing a list of points
select points; // Optional
points
(
(2.25 0.5 0)
(2.75 0.5 0)
);
\endverbatim
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