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I am planning to choose a base media library for my model, I am interested in this library, but I am not sure what the difference is between HelmholtzMedia and Modelica.Media, could you give me some clue about it?

Oct-25-20 06:47:07
Modelica library that works like Aspen plus

Is there a widely-used Modelica library for chemical process simulation? I tried to google it but just found some academic papers without any open-source library.
I found a "chemical" library on Github, but It's more like an education-oriented library, while I am looking for a library that works like Aspen Plus.

Let's take ThermoSysPro as an example, in ThermoSysPro, it deals with the initialization problem as @adrpo said, liked showed in the following screenshot which is from the example model shipped with ThermoSyspro, but when I try to use the same method, I really can't find which variable I should set values to, cause I don't know which variable causes the initialization failure in a big system.

https://imgur.com/sdV6ZCo

Here is another method from Thermal Power Library developed by Modelon, in this library, each component seems to transfer the values layer by layer until to the iteration variables, but again, I am not sure which variables are chosen as iteration variables in advance, so I have to modify the code after an initialization failure.

https://imgur.com/Dg566KJ

https://imgur.com/c18Y68V

How to set values to all the variables that could be possibly used as iteration variables, for example, there is a heat exchanger which includes a few connectors, and each connector includes a few variables, I can't know which variables could be used as iteration variables, when dealing with initialization, do I need to set values to every variable so that no matter which variable is chosen as iteration variable, there is a reasonable value?

The key issue I am faced with currently is how to ensure convergence during initialization, and when divergence occurs because of not so good start values, I have to check all the start values, but in a complicated power plant model, there could be thousands of
iteration variables,  So, my question is how to find the bad start value guess when facing an initialization divergence in Dymola?

Here are two more detailed questions on Stackoverflow.
https://stackoverflow.com/questions/592 … vergence-i

https://stackoverflow.com/questions/592 … for-next-s

Feb-12-18 08:20:40
SiemensPower

I am trying to use OpenMolica to build some model based on SiemensPower Library, but I can’t open the webiste of FAQ and Guidelines, anyone know where to find the guideline of this library?
https://s1.ax1x.com/2018/02/12/9JGfYR.png

Feb-11-18 05:07:51
visualize the structure of a libray

For example a model might extends from some partial model,  i am confused about the dependency  structure in a big library, so I'd like to if there is an visualization tool  or something else that would help me to know the dependency in a library,

Feb-10-18 18:08:04
visualize the structure of a libray

Is there any tool that allows to visualize the structure of a libray??
https://s1.ax1x.com/2018/02/11/9GGz26.png

Feb-03-18 15:06:22
FMU is not generated on Linux Xubuntu 16

How is the experience of using Linux system, does the OpenModelica run more fluently in Linux System?

Jan-29-18 08:09:12
can't load ClaRa Library

I try to load the TILMedia library first, but there is something missing, so I trace the warning, it seems that there is something missing, I don’t have a licensed Dymola, so I am not sure how the Dymola deal with this problem?
https://s1.ax1x.com/2018/01/29/pzqIG8.png

Jan-26-18 07:47:19
Some models take significant time to translate/compile

I just read this paper, it mentioned that he used a cluster including eight nodes, How could I configure my 2 PC to run in parallel.
https://s1.ax1x.com/2018/01/26/pqBaxP.png

Jan-23-18 03:48:13
ClaRa and OpenModelica

I try to use OpenModelica to load the ClaRa libray, but there is some Unresolved reference, but there is no error, when I simulate some example, an error reminds me that there is something missing, but the library works fine on Dymola, so is this library just suitable for Dymola? How could I solve this problem?
https://s1.ax1x.com/2018/01/23/p5ICTS.png

https://s1.ax1x.com/2018/01/23/p5IiFg.jpg

Jan-21-18 07:51:38
set the font size of OpenModelica

How could I set the font size of OpenModelica, in the options, I could set the font size of "Message browser", but there is no option for "Libraries browser" and "Document browser"??
https://s1.ax1x.com/2018/01/21/pWHVHS.png

Jan-21-18 07:25:26
OpenModelica's perfomance

I am recently using OpenModelica to do some simulation of power plants, but it's really very slow, is there any method to improve the performace of OpenModelica??

Jan-21-18 06:00:36
sublime and OpenModelica

Thanks for you recommendation,  I just checked this website, but it seems the tools provide are based Mac OS, is there any similar tools for Windows??

Jan-18-18 06:23:19
No error when import an package that doesn't exist

When import an package that doesn't exist , OpenModelica doesn't gives any warning or errors.

https://s1.ax1x.com/2018/01/18/psotM9.png

Jan-18-18 03:11:52
sublime and OpenModelica

I'd like to use sublime text editor to write the model code, and compile it, I found a paper that finish this job, but I can't find the package or the source code
https://s1.ax1x.com/2018/01/18/psNDOI.png

Jan-18-18 01:56:26
can't save mmodel if with any errors

I can't save the model if the model has any errors.
https://s1.ax1x.com/2018/01/18/psQXSx.png

Jan-17-18 15:16:00
2-dimensional convective heat transfer component

Is there a library that contains 2-dimensional convective heat transfer component??

Jan-17-18 14:01:35
Add ports for self-defind component

The component in MSL all have ports, I could draw them in my model and connect them using a mouse, but as for the component I build by myself, how could I add some ports for them?
This is a comparsion:
https://s1.ax1x.com/2018/01/17/pr8NqO.jpg

Jan-17-18 13:15:40
when the path contains Chinese characters, OpenModelica can't load the models

I am using windows 10 and  OpenModelica v1.13.0-dev-52-g85c8ee9 (64-bit).

Jan-17-18 13:08:44
when the path contains Chinese characters, OpenModelica can't load the models

I build up some models, but if the path that stores these models contains Chinese characters, I can't use OpenModelica to load these models.

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