volume mesh between two surfaces

Farah Alkhatib

Hi,

I am trying to create a volume tetrahedral mesh between two surfaces, I need to close the top and bottom caps of my structure (below is a section of the model).

I am facing two issues:

1. I need to keep the same topology (map) of these surfaces, in other words the positions of the nodes.

2. I need a bigger size elements in the middle of the mesh to reduce the computation time. 

the aim is to get a mesh that look like this 

I highly appreciate your help,

Many thanks,

Farah

PaulAltair

you will need to close the volume first I think, (i.e. create a mesh between the edges) you can create a dummy component, and do that with ruled (2d) mesh, pick the nodes around one part as node list 1, then around perimeter of other for node list 2 (mesh delete surf), you can remesh the resulting elements if needed

Then in tetramesh parameters, use 'user controlled' uniform layers is number of consistent layers at the surface, growth rate is how quickly it gets bigger inside (you may need to experiment here)

Then in tetramesh panel, select your 'Fixed' comps as your existing mesh, that will keep your existing nodes/locations for your 2 surfaces (you have one quad mesh? so set split option if you need to) you can set your 'dummy mesh' as 'Float' i.e. it can change that one freely

PaulAltair

Paul Sharp_21301 said:

you will need to close the volume first I think, (i.e. create a mesh between the edges) you can create a dummy component, and do that with ruled (2d) mesh, pick the nodes around one part as node list 1, then around perimeter of other for node list 2 (mesh delete surf), you can remesh the resulting elements if needed

Then in tetramesh parameters, use 'user controlled' uniform layers is number of consistent layers at the surface, growth rate is how quickly it gets bigger inside (you may need to experiment here)

Then in tetramesh panel, select your 'Fixed' comps as your existing mesh, that will keep your existing nodes/locations for your 2 surfaces (you have one quad mesh? so set split option if you need to) you can set your 'dummy mesh' as 'Float' i.e. it can change that one freely

oh, and, when you are happy, you can delete the 'dummy' mesh

 

Farah Alkhatib

Thanks @Paul Sharp 

That was very helpful, it worked for my case.

Many thanks,

Farah