the performance summary at the end of a Norne run which are printed by
`flow_ebos` now looks like this on my machine:
```
Total time (seconds): 773.757
Solver time (seconds): 753.349
Assembly time (seconds): 377.218 (Failed: 23.537; 6.23965%)
Linear solve time (seconds): 352.022 (Failed: 23.2757; 6.61201%)
Update time (seconds): 16.3658 (Failed: 1.13149; 6.91375%)
Output write time (seconds): 22.5991
Overall Well Iterations: 870 (Failed: 35; 4.02299%)
Overall Linearizations: 2098 (Failed: 136; 6.48236%)
Overall Newton Iterations: 1756 (Failed: 136; 7.74487%)
Overall Linear Iterations: 26572 (Failed: 1786; 6.72136%)
```
for the flow_legacy family, nothing changes.
Another polymer-specific overload of computeFractionalFlow()
has been added in support of this (this overload deals with
compressible properties.
Also added pressure normalization for situations with arbitrary
absolute pressure.
A polymer-specific overload of computeFractionalFlow()
has been added in support of this.
Also added a minor feature: pressure normalization for
situations with arbitrary absolute pressure.
They do this by using the class PolymerInflowFromDeck
instead of PolymerInflowBasic if there is a WPOLYMER
keyword somewhere in the deck epochs. If there is no
WPOLYMER, the parameters 'poly_start_days' etc. will
be used to construct an instance of PolymerInflowBasic
instead.
