SimScale CAE Forum

Aerodynamic Analysis of Non-pneumatic tires - Pressure divergence

I am a beginner and I’m doing a project on non-pneumatic tires in which a CFD analysis is performed. I have completed all the steps and started the simulation process>however, I am getting an error as shown in the below image

I have also attached the link to the project below. Hoping to see your reply soon.

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Hi there!
You missed to assign one of the slip walls:

This means it was automatically set as a no-slip wall.
Other than that, divergence seems to occur contact patch of the wheel with the road.
(I used the Isovolumes method described here: How to Check and Improve Mesh Quality | SimScale)

I suggest you increase the gap between these two surfaces, like in the vehicle tutorial here:

Let me know how it goes :smiley:

Best regards,

Thank you so much!
So after assigning the third slip wall the mesh has to be regenerated and a new simulation has to be run right?

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If the physics-based meshing is applied, then I recommend you recreate the mesh and then create the simulation :slight_smile:

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