Archived OpenModelica forums. Posting is disabled.

Alternative forums include GitHub discussions or StackOverflow (make sure to read the Stack Overflow rules; you need to have well-formed questions)


Forgot password? | Forgot username? | Register

CurvedBend Fitting & EdgeBend Fitting

CurvedBend Fitting & EdgeBend Fitting

Hi,

I have attached 2 simple model  using fluid with a curvedBend fitting and in another case Edgebend fitting. I get an error while using curvedBend fitting. But the error does not occur in Edgebend fitting.

One observation is that

for Edgebend I have used  a record from ==> Modelica.Fluid.Fittings.BaseClasses.Bends.EdgedBend.Geometry for defining Geometry parameter G1.

for Curvebend I have used  a record from ==> Modelica.Fluid.Fittings.BaseClasses.Bends.CurvedBend.Geometry  for defining Geometry parameter G1

I am sure this is causing the problem in CurveBend. But I don't know how to address.

Can anyone kindly help. I am not able to figure out what is the cause as both are very similar.

Regards,
Balaji
CurveBend.mo

EdgeBend.mo

Edited by: Balajik - Apr-21-21 03:07:19

Re: CurvedBend Fitting & EdgeBend Fitting

Dear Openmodelica users. Request your help. Kindly support.

Regards

Re: CurvedBend Fitting & EdgeBend Fitting

Dear Balajik,
The problem with Modelica.Fluid is its complexity. So, it is not easy to analize how it is working. I gave a look at the models and it is really difficult to fully understand them without spendig a some hours, so I finished there. I think that the only persons that probably can help you are the authors or the library.

Regards

Carlos

Re: CurvedBend Fitting & EdgeBend Fitting

Dear Carlos,

Thanks for working on my problem. I agree with you. It a very simple case. All I have done is changed the component from Edgebend to curveBend. But I get a completely unsolvable error.

One observation is that

for Edgebend I have used  a record from ==> Modelica.Fluid.Fittings.BaseClasses.Bends.EdgedBend.Geometry for defining Geometry parameter G1. Even if I replace it withModelica.Fluid.Dissipation.Utilities.Records.PressureLoss.EdgedBend it works.

for Curvebend I have used  a record from ==> Modelica.Fluid.Fittings.BaseClasses.Bends.CurvedBend.Geometry  for defining Geometry parameter G1.

I am sure this is causing the problem in CurveBend. But I don't know how to address.

Can you kindly indicate how to reach out to the developers of the library. I am relatively new to this tool.

Regards,
Balaji

Edited by: Balajik - Apr-21-21 03:10:45

Re: CurvedBend Fitting & EdgeBend Fitting

Hi Balaji,
As far as I know the developers of OpenModelica are specialists in simulation, but not in each of the areas covered by the Modelica standard library. The Fluid library I guess is built by a working group, with the authors of this paper probaly involved. Of them, Francesco Casella is also one of the leading persons of OpenModelica.

Regards

Carlos

Re: CurvedBend Fitting & EdgeBend Fitting

Dear Carlos,

Thank a lot.

Balaji

Re: CurvedBend Fitting & EdgeBend Fitting

Thanks for the info

There are 0 guests and 0 other users also viewing this topic
You are here: