Hello,

I am testing the Open Modelica Editor to see if I could swith to it for most of my usual simulation.
First I have tried a very simple steady state simulation using ThermoSysPro package and connecting :
- a source of steam,
- a steam turbine,
- a sink

This first simulation worked fine, here is the code of the model :

model TAV
  ThermoSysPro.WaterSteam.Machines.StodolaTurbine stodolaturbine1 annotation(Placement(visible = true, transformation(origin = {0, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
  ThermoSysPro.WaterSteam.BoundaryConditions.Sink sink1 annotation(Placement(visible = true, transformation(origin = {60, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
  ThermoSysPro.WaterSteam.BoundaryConditions.SourcePQ sourcepq1(P0 = 10000000.0, h0 = 3000000.0, Q0 = 110) annotation(Placement(visible = true, transformation(origin = {-60, 0}, extent = {{-10, -10}, {10, 10}}, rotation = 0)));
equation
  connect(stodolaturbine1.Cs, sink1.C) annotation(Line(points = {{10.1, 0}, {50.6066, 0}, {50.6066, -1.03986}, {50.6066, -1.03986}}));
  connect(sourcepq1.C, stodolaturbine1.Ce) annotation(Line(points = {{-50, 0}, {-10.052, 0}, {-10.052, -1.03986}, {-10.052, -1.03986}}));
  annotation(Icon(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {2, 2})), Diagram(coordinateSystem(extent = {{-100, -100}, {100, 100}}, preserveAspectRatio = true, initialScale = 0.1, grid = {2, 2})));
end TAV;

Then I tried to inverse the problem, fixing the output pressure et letting free the intern coefficient called Cst (that is a very trivial calculation usually done for model calibration).

First I found that I could not add attributes in the block windows, and that it was safer to do it in the modelica code. Here is what I added in the code :

stodolaturbine1(Cst(fixed = false), Ps(fixed = true, start = 4.7e6))

The simulation works but it does not take into account my attribute for "fixed" : Ps is still free and Cst is still fixed to its default value.
If someone can help to solve this difficulty, I would be quite happy.

I would prefer to solve out this simple case before going further with big steady stat or dynamic simulations with OME.

Using OME I also had some problems to save new models in a package. For instance if I do :
- right click on a model
- copy
- type name "newmodel"
- choose the package in which I want to keep it
- modify newmodel
- save it

Then the file newmodel.mo never appears in my package directory, so I cannot figure out how to save it effectively from OME...
I am eager to getting your advices.

Thanks
B