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modelica / ModelicaStandardLibrary

Free (standard conforming) library to model mechanical (1D/3D), electrical (analog, digital, machines), magnetic, thermal, fluid, control systems and hierarchical state machines. Also numerical functions and functions for strings, files and streams are included.
https://doc.modelica.org
BSD 3-Clause "New" or "Revised" License
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Homotopy for Modelica.Fluid---Heat transfer in volume models #666

Open modelica-trac-importer opened 7 years ago

modelica-trac-importer commented 7 years ago

Reported by msielemann on 15 Dec 2011 14:17 UTC In order to implement homotopy in Modelica Fluid, the volume models shall be modified on the branch

https://svn.modelica.org/projects/Modelica/branches/development/Homotopy3.3-dev

This shall be done along the ideas presented in

https://www.modelica.org/events/modelica2011/Proceedings/pages/papers/04_2_ID_131_a_fv.pdf

Please make the modifications and implement two or more test models in ModelicaTest.Fluid.

Migrated-From: https://trac.modelica.org/Modelica/ticket/666

modelica-trac-importer commented 7 years ago

Comment by kilian_link on 12 Jan 2012 13:07 UTC As far as I have seen, the vessel models only use constant heattransfercoefficients alpha. Do you think homotopy might be useful in this case, e.g. when writing homotopy(alpha,0)?

modelica-trac-importer commented 7 years ago

Comment by msielemann on 16 Jan 2012 14:02 UTC This is an important point. If alpha is known and constant, I think that it should be used directly (no use of the operator).

Using the operator as you wrote would decouple the thermal from the fluid side. I would not use it this way in a first attempt unless Francesco's experience or testing indicated that this was beneficial.

modelica-trac-importer commented 7 years ago

Comment by fcasella on 14 Dec 2015 23:00 UTC Accepted tickets

modelica-trac-importer commented 7 years ago

Comment by fcasella on 14 Dec 2015 23:08 UTC Not enough time to handle this for MSL 3.2.2 and test properly. Rescheduled to next minor revision

modelica-trac-importer commented 7 years ago

Comment by beutlich on 20 Dec 2016 19:50 UTC Unhide in agreement with msielemann and otter.