The B matrix is basically a component-wise multiplication
with a vector followed by a parallel reduction. We do that
reduction to all ranks computing for the well to save the
broadcast when applying C^T.
IMHO this might have happened if perf_data_ is empty
or if the last connection is closed. (Discovered while
working on distributed wells but might happen already
before!)
This commit ensures that we calculate the well and connection level
per-phase steady-state productivity index (PI) at the end of a
completed time step (triggered from endTimeStep()).
We add a new data member,
BlackoilWellModel<>::prod_index_calc_
which holds one WellProdIndexCalculator for each of the process'
local wells and a new interface member function
WellInterface::updateProductivityIndex
which uses a per-well PI calculator to actually compute the PI
values and store those in the WellState. Implement this member
function for both StandardWell and MultisegmentWell. Were it not
for 'getMobility' existing only in the derived classes, the two
equal implementations could be merged and moved to the interface.
We also add a new data member to the WellStateFullyImplicitBlackoil
to hold the connection-level PI values. Finally, remove the
conditional PI calculation from StandardWell's well equation
assembly routine.
and use it in the WellInterface instead of creating a vector
with these indices there. The original approach recreates
information in another path of the well and assumes that all
connections are in a process's local partition. That assumption
does not hold any more for distributed wells.
1) Only check GCONSALE limits at the end of a timestep. NB. The simulator still throws if some of the limits are violated
2) BUGFIX: don't remove gas consumption twice
- Communicate all well rates.
- When changing controls, modify rates to satisfy failed constraint.
- Ensure targets are positive.
- Always solve for potentials for MSW (temporary fix).
