refact: get phase using string name

[asmfstatoil]

No description provided.

[EvenSol]

good update!

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 16.21622% with 31 lines in your changes are missing coverage. Please review.

Project coverage is 34.69%. Comparing base (388d877) to head (ba49e1c).

Files	Patch %	Lines
...processSimulation/util/monitor/StreamResponse.java	0.00%	20 Missing ⚠️
.../main/java/neqsim/thermo/util/empiric/DuanSun.java	0.00%	2 Missing ⚠️
...va/neqsim/PVTsimulation/simulation/DensitySim.java	0.00%	1 Missing ⚠️
.../neqsim/PVTsimulation/simulation/ViscositySim.java	0.00%	1 Missing ⚠️
...m/PVTsimulation/simulation/ViscosityWaxOilSim.java	0.00%	1 Missing ⚠️
...eNode/twoPhasePipeFlowNode/StratifiedFlowNode.java	0.00%	1 Missing ⚠️
...sSimulation/measurementDevice/MultiPhaseMeter.java	50.00%	1 Missing ⚠️
...on/processEquipment/reservoir/SimpleReservoir.java	0.00%	1 Missing ⚠️
...mulation/processEquipment/separator/Separator.java	0.00%	1 Missing ⚠️
...Simulation/processEquipment/subsea/SubseaWell.java	0.00%	1 Missing ⚠️
... and 1 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #932      +/-   ##
============================================
- Coverage     34.69%   34.69%   -0.01%     
  Complexity     5274     5274              
============================================
  Files           700      700              
  Lines         69741    69741              
  Branches       7984     7984              
============================================
- Hits          24196    24195       -1     
- Misses        44063    44064       +1     
  Partials       1482     1482              

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