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solverdymola
Alireza Masoom
Alireza Masoom

Reputation: 139

DEA mode activation in Dymola

I have a problem regarding solving the model in DAE mode. I need to know the procedure for the activation of the DAE flag in Dymola 2019.

Upvotes: 0

Views: 685

Answers (1)

Hans Olsson
Hans Olsson

Reputation: 12507

That is described in the release notes:

3.3 Simulating a model

3.3.1 DAE Mode
Dymola 2019 supports DAE (Differential-Algebraic Equations) mode. DAE mode is activated by setting the flag 

Advanced.Define.DAEsolver = true

DAE mode is supported by the integrators Dassl, Radau IIa, Esdirk23a, Esdirk34a, Esdirk45a, and Sdirk34hw. (The flag is by default false.)

Note that there has been improvements in the mode for Dymola 2020 and that not all models benefit from DAE-mode.

See also the conference paper: https://modelica.org/events/modelica2019/proceedings/html/papers/Modelica2019paper4D1.pdf

Upvotes: 1

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