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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?
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.
Here is a similar question on StackOverflow.
https://stackoverflow.com/questions/609 … ica-models
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.
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.
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
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,
How is the experience of using Linux system, does the OpenModelica run more fluently in Linux System?
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?
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??
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??
Is there a library that contains 2-dimensional convective heat transfer component??
I am using windows 10 and OpenModelica v1.13.0-dev-52-g85c8ee9 (64-bit).
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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