Boundary layer Mesh for external aerodynamics

Altair Forum User

Hi,

 

I am trying to create a boundary layer mesh around a sphere. It is non uniform boundary layer, what I mean is I am fully aware of how to create a volume mesh with boundary layers. But what I dont know is how I can create a varying number of boundary layers within the domain. Say closer to the sphere, I want 20 layers and near the inlet I need 10 layers. Is there way to create this within Hypermesh?

 

Thanks

Rahul Rajan_21763

could you share some snapshot of your model for better understanding?

 

Regards

Rahul R

Altair Forum User

Hi Rahul,

 

Thank you. Please find the snapshots attached. Geom.jpg is the domain that I am trying to mesh. It's a simple one with sphere, rod and a wire wrapped to it inside a box.

The picture1.png is the mesh that I am trying to replicate in Hypermesh. You can see it is jaggered with multiple refinement zones and different meshing parameters for each of them. Can I do this is in Hypermesh, if yes can you please help?

 

Thanks

 

 

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Altair Forum User

Hi @Rahul R 

Any pointers will be helpful.

 

TIA

Rahul Rajan_21763

You want only hex mesh or tetramesh is fine in your case?

 

Regards

Rahul R

Altair Forum User

Altair Forum User said:

Hi @Rahul R 

Any pointers will be helpful.

 

You can not make this such CFD mesh (as your image) with Hypermesh, IMHO (maybe I'm wrong? @Rahul R ?)

You can not change the number of BC layers neither. But it's possible to make layers with variable thickness.

Altair Forum User

Thank you @Q.NGUYEN-DAI & @Rahul R

Rahul Rajan_21763

Hi,

In acuconsole & VWT it is possible to achieve such mesh using tetrahedral element.(Both are HW product)

 

Regards

Rahul R