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Help with NASTRAN mesh import -> automatically assign explicits in geometry

Posted 29 mars 2016, 13:23 UTC−4 Acoustics & Vibrations, Geometry, Mesh, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 5.2 1 Reply

Brian Henry
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Hello, thanks for reading this,

I was wondering if I could get help with mesh loading. What I currently do with my simulations is take a mesh of the lungs and airways, and assign boundary conditions based on the outlets of the airways. Up until this point, I manually hit every one of the airway endpoints because I didn't have expansive airways and I didn't know how to automate this process. Not, I'm beginning to have problems since my airway tree can have thousands of endpoints I need to set BC's for in COMSOL.

What I do with my import mesh is I bring a NASTRAN I made in ANSYS ICEM CFD, and the NASTRAN file already has zones for the airways (surface and volume), airway endpoints, part of airways (surface), inlet (surface), combined with a lung parenchyma (surface and volume). When I import my NASTRAN, though, I can see the volumes get preserved because I can target each volume individually. What doesn't happen are any of the surfaces getting preserved, and that means I had to do it manually until now.

Is there a way to automate this process? Thanks for the advice!
1 Reply Last Post 4 août 2016, 12:10 UTC−4
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Hello Brian Henry

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Samir Benabid
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Posted: 8 years ago 4 août 2016, 12:10 UTC−4
Hello Brian,

I am working on the modelizing of lungs and i didn't found a geometry of lungs that I can import on Comsol.

How do you have done to create a mesh of the lungs ?

Could you send me your mesh of the lungs ?

Thanks

Best Regards.
Hello Brian, I am working on the modelizing of lungs and i didn't found a geometry of lungs that I can import on Comsol. How do you have done to create a mesh of the lungs ? Could you send me your mesh of the lungs ? Thanks Best Regards.

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