This commit activates the support for calculating WBPn summary
result values per well in parallel. To affect the calculation we
add two new data members in BlackoilWellModelGeneric:
- conn_idx_map_:
Maps well's connection index (0..getConnections().size() - 1) to
connections on current rank. Its local() connections are
negative 1 (-1) if the connection is not on current rank, and a
non-negative value otherwise. The global() function maps well
connections on current rank to global connection ID for each
well. Effectively the reverse of local(). Finally, the open()
function maps well connections on current rank to open/flowing
connections on current rank. Negative 1 if connection is not
flowing.
- wbpCalculationService:
Parallel collection of WBPn calculation objects that knows how
to exchange source and result information between all ranks in a
communicator. Also handles distributed wells.
We furthermore need a way to compute connection-level fluid mixture
density values. For the standard well class we add a way to access
the StandardWellConnection's 'perf_densities_' values. However,
since these are defined for open/flowing connections only, this
means we're not able to fully meet the requirements of the
WELL/ALL
WPAVE depth correction procedure for standard wells. The
multi-segmented well type, on the other hand, uses the fluid mixture
density in the associated well segment and is therefore well defined
for ALL connections. OPEN well connections are supported for both
well types.
With zero threshold pressure and zero pressure difference, the existing code will
set the pressure diff explicitly to zero. This will also set any derivatives to
zero as well, which may disconnect the corresponding matrix rows.
This initial commit changes the API of the CollectDataToIORank
class' handling of WBPn values from collecting a set cell pressures
into communicating pre-computed WBPn values through the new
WellBlockAveragePressures container class. This is in preparation
of moving the WBPn calculation to the simulator side for greater
parallelism. For now we do not compute any of the actual WBPn
values. That will be the subject of follow-up commits.
While here, also split a number of very long lines for readability.
