Declaring a conditional component based on a time-dependent variable

Question

Is it possible to declare (or re-declare) components depending on the value of a time-dependent variable (as opposed to parameter)? The conditional declaration has been discussed here several times (for example, # 1 , # 2 and No. 3 ), however, in these examples the condition depends on the parameter.

My situation is this: I have two models, NaturalConvectionHeatTransferand ForcedConvectionHeatTransferthat extend from the same interface PartialHeatTransfer. In the third model, I would like to do something like this:

model MyProblem
  // stripped other declarations
  input v "Velocity of fluid flow";
  replaceable PartialHeatTransfer heatTransfer;
equation 
  if v == 0 then
    // redeclare heatTransfer to be of type NaturalConvectionHeatTransfer
  else
    // redeclare heatTransfer to be of type ForcedConvectionHeatTransfer
  end if;
end MyProblem;

Component blah if v==0;, , , v . ? , "", . , , - , . , , .

Answer 1

. , , , heatTransfer , .

http://dx.doi.org/10.3384/ecp14096183 , Modelica, ( ).