Bugfix: result extraction for incompressible media now based on real density

[dlohmeier]

No description provided.

[SimonRubenDrauz]

I see your point but I don't agree totally with your adaptions. vf is actually defined as standard flow rate. This is also extracted as result in liquid fluids. If you change vf the way you do, the results are misleading in my opinion. I guess we have to possibilities:
1.) Either we use vf differently. In liquids it is considered as the volumetric flow rate (and displayed accordingly), in gases it is the standard flow rate
2.) We consider both in the results and display both.

In terms of the velocities I agree and we should correct the bug accordingly

[dlohmeier]

pandapower only supports python >=3.9 on develop. The tutorial tests are still running with pandapower develop, which is why also required tests fail, not just the relying tests. I guess we should change this to pandapower master? Should I do it in this PR? @SimonRubenDrauz @EPrade

[codecov]

Codecov Report

Attention: Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 85.63%. Comparing base (12c8256) to head (4a1cf98).

Files	Patch %	Lines
...pes/component_models/pressure_control_component.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #640      +/-   ##
===========================================
- Coverage    86.02%   85.63%   -0.40%     
===========================================
  Files           90       90              
  Lines         6497     6500       +3     
===========================================
- Hits          5589     5566      -23     
- Misses         908      934      +26     

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[dlohmeier]

I see your point but I don't agree totally with your adaptions. vf is actually defined as standard flow rate. This is also extracted as result in liquid fluids. If you change vf the way you do, the results are misleading in my opinion. I guess we have to possibilities: 1.) Either we use vf differently. In liquids it is considered as the volumetric flow rate (and displayed accordingly), in gases it is the standard flow rate 2.) We consider both in the results and display both.

In terms of the velocities I agree and we should correct the bug accordingly

This is now handled differently for compressible / incompressible media