Hubertus Tummescheit

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icon company Model Based Innovation LLC icon location Harford, CT, USA icon location Dr. Hubertus Tummescheit is the Founder of Model Based Innovation LLC and one of the founders of Modelon. He is also a board member of the Modelica Association

Results 23 comments of Hubertus Tummescheit

Removing cycles between Modelica and ModelicaServices

I am cheching wiht my team about their thoughts on this one, stay tuned.

Removing cycles between Modelica and ModelicaServices

With respect to this particular PR it seems to me that the broadest consent is to do nothing for this release, and make a ticket to transfer as much as...

Jump in Modelica.Fluid.Pipes.BaseClasses.WallFriction.LaminarAndQuadraticTurbulent.massFlowRate_dp_staticHead

Hello Mani! Yes, I agree with your proposed solution. It's very good to now have met you actually in person!

Uses annotation should support mutliple libraries

This looks like a simple solution to a recurring problem. The specification can be lifted from Python. Many Modelica libraries are only lightly connected. Many old libraries from 3.x only...

Generate events in functions; to avoid non-discrete booleans.

I would be in favor to add the rewrite proposed by Hans. It makes the event generation explicit. Could you add it to the PR?

Standardized way to select iteration variables and residuals

Thanks, @casella, for bringing this up. We (Modelon) can speak with several years of experience with this, implemented this in a number of libraries, and I can say that the...

Standardized way to select iteration variables and residuals

BTW: I suggest to rename the issue to something else than the OM annotation, that coveres the general issue, such as: "Standardized annotations to select iteration variables and residuals "

Update MultipleResonance.mo

> This is not correct; it should also be corrected on master. I am not so fluent in git as to know how to do that best: @HansOlsson, couldn't you...

Ability to access residuals and Jacobians of algebraic systems in ME FMUs for Optimization

Clarification (I think). The request by GM is not about the old "FMI-for-DAE" effort requiring fully implicit, sparse solvers, , but for exposing algebraic loops in an FMU to an...

Ability to access residuals and Jacobians of algebraic systems in ME FMUs for Optimization

Interesting discussion :-). I think there are 2 cases: 1. Exposing internal algebraic loops of a normal dynamic FMU for external solving. I think this can be done as a...