Todo: incorporate WellDensitySegment. Currently values of the pressure
drop is hardcoded to make the rest of the code work
Todo: make it possible to shut perforation with crossflow.
if done the other way round we would make an assertation in TimeMap
false and also the values returned by SimulationTimer would be for the
next time step and not the current one...
The code was partially kept as a reminder to implement
proper well reporting and mass balance reporting. Now
well reporting has been taken care of, so we remove
the code.
This computes pressure differences with respect to the bottom-hole pressure
for each well perforation, based on the well flows. It is explicit and not
implicit, using the previous time step's flow rates to calculate the necessary
densities.
The simulator now handles live gas as well as live oil.
The primary variables are Po,Sw and Rs,Rv or Sg depending on fluid
condition
State 1 Gas only (Undersaturated gas): Po, Sw and Rv
State 2 Gas and oil: Po, Sw and Sg
State 3 Oil only (Undersaturated oil): Po, Sw and Rs
This commit includes:
1. New interfaces for the vapor oil/gas ratios (Rv)
2. Modifications in the equations to handle rvs
3. New definition of ADI variable to handle changing primary variables
4. Modifications in the solution updates to handle changing primary
variable
5. Some changes in the appleyard process to sync with Mrsts livegas
implementation.
NOTE:
The implementation is tested on the liveoil cases SPE1 and a simplified
SPE9 and produces the same results as the old code.
The simulator is not yet able to converge on SPE3 with livegas present.
For SPE3 to converge a more robust well implementation is needed. The
current simulator reproduce the results of Mrst when a similar well
model is used in Mrst as is currently implemented OPM.
The pvt interface is extened to handle wet gas
1. A function for rvSat is added to the interface
2. An interface that takes rv and the fluid condition as an input for
the gas properties is added. The old interface without rv and the fluid
condition is kept in the file.
3. The new interface is implemented in BlackoilPropsAd and
BlackoilPropsAdFromDeck.
A simulator that tests wet gas is not yet implemented.
I'm neither sure that this is fully correct nor that I found all
occurences (so far, the output writing code is missing in this patch),
but it seems to work for SPE1...
Commit 4aa0eaf introduced density and viscosity evaluators into the
BlackoilPropsAdInterface that accepted an externally assignable
condition to distinguish saturated from unsaturated cases. As a
result of a few low-level technical problems with that approach,
this commit changes those affected interfaces to use the black-oil
specific 'PhasePresence' facility of opm-core's commit a033329.
Update callers accordingly.
The criteria for whether the fluid is saturated or not is moved from the
within the pvt calculations to the solver, and passed to the pvt
calculations as a array of boolean values.
The most severe change probably is the removal of the AutoDiff
debugging helper functions which were useful from within a debugger
but unfortunately had to rely on a presumed linker bug in order not to
be removed in the final binary.
Also, some private attributes were unused. These have been removed and
the constructors of their respective classes have been adapted. Once
their intended functionality is actually implemented, they should be
brought back on an as-needed basis.
Thanks to @bska for the review!
