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Fan simulation

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Old   October 13, 2023, 06:04
Question Fan simulation
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Geetanjali Alle
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Hi, i am simulating an enclosure with 2 fans, a few heat sources on a heat sink and a few components placed on the PCB. I did all the necessary boolean operations. I kept getting failed mesh due to overlapping connections. So to solve it, I added components to a new part and increased the tolerance of contacts.
In fluent,
I used the transient solver with k-epsilon model with std function,
Assigned source term to bodies,
Mesh motion to the rotating domain,
Pressure inlet with 60 deg C temperature and a pressure outlet,
In mesh interfaces, I added coupled wall,
SIMPLE model with 2nd order discretization

The solution keeps diverging. I am unsure if it is because of the mesh overlapping connections or fluent settings. Any help would be great. Thanks.
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divergence amg solver, fan, fluent, mesh, overlapping

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