Hi Enzo,
In the model attached to the question, no temperature change is observed because air flows from one reservoir to another, but the temperature is measured only at the first reservoir. These two reservoirs are not the same or directly connected.
If you want the airflow to end in the second reservoir, change its temperature setting from 25 K to 25°C and attach the Pressure and Temperature Sensor(G) to the signal as show below. This allows temperature to be measured at that port, and you may notice a slight increase.
The temperature rise is small due to free convection (Heat Transfer Coefficient = 20 W/(K·m²)). To see a larger change, increase the temperature or simulate forced convection by raising the heat transfer coefficient. Please find the attached model for your reference.
Here is the link to documentation on Reservoir(G) for further reference, if needed: https://www.mathworks.com/help/simscape/ref/reservoirg.html
Hope this helps!
