Using both external and internal volume in one design

[igaviano]

Hi @Owura, thanks for sharing

Looking at the convergence plots/area average, the issue seems to be the convergence of your simulation indeed:

Please refer to these pages:

@igaviano

• How to Check Convergence of a CFD Simulation? | SimScale
• Divergence in Simulation: How to Tell When and Where? | SimScale
• How to Check and Improve Mesh Quality | SimScale

2 additional comments:

1. Make sure the power source values are correct.
2. Since your simulation is compressible and very sensitive to small variations in the density field, try setting it’s relaxation factor to 0.1:
   
   

Cheers