I am using 2 functions in a model and using this component model in system model (dymola) , the system model is showing some non-linearity and when debugged using dsmodel.mof (in algorithm torn part section) , all non-linear equations are pointed towards these 2 functions.How to figure which part of function is causing the issue?
Short answer: No.
Functions itself don't create nonlinear systems. Nonlinear system are algebraic loops in the overall equation system. It is how about you use this functions in the equation part of the model.