I resolved my problem for this example.

DYMOLA-Thermal-Systems-Simulation.mo

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But  I always looking for a very simple example thermal fluid file ! ? (very very simple  please if you have online link, ebook or over ! ? thanks you for you help !![/size]

Hi,
I did was to try this example but , i have error messages

Variable TAmb not found in scope ll.

[13] 19:35:25 Traduction Erreur
Error occurred while flattening model ll

link example example

And my file modelica  in message

thank you in advance very much for your help !

Thank you very much Adrpo , it works perfectly !

Hi,
Is it possible to clone or save as examples for edit ?
thank you in advance.