Opened 7 years ago
Closed 7 years ago
#5160 closed defect (fixed)
Derivative information lost by the NF
| Reported by: | Francesco Casella | Owned by: | Per Östlund |
|---|---|---|---|
| Priority: | high | Milestone: | 2.0.0 |
| Component: | New Instantiation | Version: | |
| Keywords: | Cc: |
Description
Please check Modelica.Media.Examples.TestOnly.IdealGasN2Mix. The NF fails with
[OMCompiler/Compiler/BackEnd/Differentiate.mo:402:3-402:155:writable]
Error: Derivative of expression "medium.h =
Modelica.Media.Examples.TestOnly.IdealGasN2Mix.Medium.h_TX(medium.T, {1.0}, true, Modelica.Media.Interfaces.Choices.ReferenceEnthalpy.ZeroAt0K, 0.0)"
w.r.t. "time" is non-existent.
[Modelica trunk/Media/IdealGases/Common/package.mo:649:5-649:19:writable]
Error: Internal error
Differentiate.differentiateEquationTime failed for
medium.h = Modelica.Media.Examples.TestOnly.IdealGasN2Mix.Medium.h_TX(medium.T, {1.0}, true, Modelica.Media.Interfaces.Choices.ReferenceEnthalpy.ZeroAt0K, 0.0)
apparently, some information is lost by the NF that prevents to correctly differentiate the equation - maybe the derivative annotation?
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This problem is now fixed, the model fails because of #5201