Loop in object creation and declaration with annotations

Question

I need to use a loop to create multiple objects in my model declaration. For loops do not seem to work outside an "equation" or an "algorithm" block. I need to declare my objects in the beggining of the Model. I also need to add different annotation to each object so that the location of each object differs.

As a result i want to create a tank consisting of cellConst subparts (found in Thermocycle package).

I already tried to do so by using the following code:

model MyTank

CellConst [N] cellConstArray = {
CellConst (
Ai=0.53, 
Ac=0.88, 
Mdotnom=1, 
L=0.25, Discretization=ThermoCycle.Functions.Enumerations.Discretizations.upwind_AllowFlowReversal, Vi=0.030, Tstart=293.15)
annotation (Placement(transformation(extent={{-14,22},{-8,28}})))
for i in 1:N
};

end MyTank;

I also tried a simple loop

model MyTank

for i in 1:N loop
end for;

end MyTank;

Though None of these two approaches worked.

Do you have any suggestions?

Thank you in advance.

Answer 1

You do things slightly differently in Modelica: you add modifiers to each element of the vector like this:

model MyTank

CellConst [N] cellConstArray(each Ai=0.53, 
 each Ac=0.88, 
 each Mdotnom=1, 
 each L=0.25, 
 each Discretization=ThermoCycle.Functions.Enumerations.Discretizations.upwind_AllowFlowReversal, 
 Vi = fill(0.030, N), // Just to show you can use an array here
 each Tstart=293.15)
);
end MyTank;