- restrict pressure changes. Set default to 1.0 (this also effects flow)
- change default number of linear iterations to 150
- tell stabilized newton the residual occilates even if it occilates in
only one phase (this also effects flow)
- avoid problems realated to division on small numbers
Tested on SPE9, norne and Model 2 with significant improvments.
A boolen user parameter is added to controll the computation of well
potential.
This is a temporary fix to assure that no extra computation time is used
on well potential calculation if it is not needed. The long term fix
will require a more thorough revising of the well group implementation.
