[ucostabi]

Hey all
I've been trying to simulate a hot cylinder (400 K) exposed to air at 300 K cooling up due to natural convection, but it doesn't work.
For my boundary conditions:
The pressure on the whole surface is 0.

The initial condition:
In initialize i set up the temperature to 400 K

In the air properties i set up the model density as boussinesq

The results show me a bar with temperature constant.
Does anyone can help me please?

[diamondx]

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