This is to improve consistency with other solvers, and relates
to the expression that is converted into a finite difference when
discretising:
(phi s) - (phi s)^0 = phi^0(s - s^0) + (phi - phi^0)s
^^^^^
The above marks the spot where we now use phi^0 instead of phi.
Also:
- solveGravity() interface changed to take surface volume as a parameter,
- gravity vector is now given in initGravity() instead of
solveGravity(), for consistency with the incompressible solver.
- Changed Wells constructor arg for SimulatorIncompTwophase to WellsManager.
- Insert checking code for well constrains (mostly copied from spu_2p.cpp).
Unrelated to the above changes.
- Added pressure normalization for incompressible case (from spu_2p.cpp)
Current status
--------------
Given vectors ZCORN, COORD and ACTNUM as well as the Cartesian
dimensions these vectors implicitly refer to, the code is
currently capable of
* Identify unique points along each pillar
* Assign point numbers for each point specified in ZCORN
* Compute face topology, i.e., the corners that define the geometry
of the faces as well as the cells that are connected through the face.
* Identify and compute intesections that occur in the processing of
face topology.
What remains is
* Handle the face geometry of boundary faces. (simple)
* Compute point coordinates of the final point list.
* Put all pieces together in a tidy manner.
