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OpenModelica PumpingSystem Example broken

asked 2020-02-20 14:30:29 -0500

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updated 2020-02-21 07:11:01 -0500

The example that OpenModelica gives itself (Under Fluids.Examples.PumpingSystem) does not work. I tried using the stable and nightly build. Still no luck. I get the following error:

[2] 12:21:23 Translation Error Internal error IndexReduction.pantelidesIndexReduction failed! System is structurally singulare and cannot handled because number of unassigned equations is larger than number of states. Use -d=bltdump to get more information.

[3] 12:21:23 Translation Error post-optimization module replaceHomotopyWithSimplified (initialization) failed.

[4] 12:21:23 Translation Error No system for the symbolic initialization was generated

For some context, I'm trying to get this to work just so I have a model where a prescribed pump works. I have yet to get any model with a Prescribed pump working.


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answered 2020-02-20 17:29:44 -0500

The OpenModelica development team is working on ensuring that OpenModelica fully supports the Buildings library. Not all fluid flow models are working. See for test coverage.

As another free simulator, you can use JModelica, while still being able to edit the models in OMEdit and saving the files to disk before invoking JModelica.

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Asked: 2020-02-20 14:30:29 -0500

Seen: 281 times

Last updated: Feb 20 '20