In order to disseminate our physiological model to the community, it is necessary to run it in open tools, such as OpenModelica. I am trying to make that happen, but fail so far. I have discovered some OM bugs and workarounds, but now I do not know what is happening and why.

The simulation just fails with these transaltion errors in message browser:


[156] 14:58:27 Translation Error
Internal error IndexReduction.pantelidesIndexReduction failed! Found empty set of continuous equations. Use -d=bltdump to get more information.

[157] 14:58:27 Translation Error
Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed!

[158] 14:58:27 Translation Error
[C:/OM116/OM64bit/OMCompiler/Compiler/BackEnd/SymbolicJacobian.mo: 2135:10-2135:88]: Internal error function optimizeJacobianMatrix failed

[159] 14:58:27 Translation Error
[C:/OM116/OM64bit/OMCompiler/Compiler/BackEnd/SymbolicJacobian.mo: 2052:9-2052:79]: Internal error function createJacobian failed


and this output from simulation output window:

Fatal error on line 23, column 10: tag mismatch
Error solving nonlinear system 10906 at time 3.88943e-006
nonlinear system 10906 fails: at t=3.88943e-006
[1] Real heartComponent.ventricles.xm_SEP(start=2.90348, nominal=1)
[2] Real heartComponent.ventricles.xm_LV(start=-4.6627, nominal=1)
[3] Real heartComponent.ventricles.xm_RV(start=6.26344, nominal=1)
The initialization finished successfully without homotopy method.
Jacobian determinant is NaN.
Jacobian determinant is NaN.
Jacobian determinant is NaN.
Error solving nonlinear system 10906 at time 3.88943e-006
Jacobian determinant is NaN.
Jacobian determinant is NaN.
Jacobian determinant is NaN.

Dymola runs fine.

One needs the dev Physiolibrary version: https://github.com/filip-jezek/Physioli … teadyState and the model ADAN_main.SystemicTree.CVS_OM from https://github.com/filip-jezek/Valsalva or grab the total saved here
CVS-OMTotal.mo


Thanks for any nudges or workarounds.

Filip Jezek