How to create a 3D mesh with different element sizes in different regions?

[WaynePowe]

I am new to GiD and I am trying to create a 3D mesh for a fluid-structure interaction problem. I have a geometry that consists of a solid domain and a fluid domain, and I want to use different element sizes in different regions of the geometry. For example, I want to use smaller elements near the interface between the solid and the fluid, and larger elements in the far field. I have read the manual and the tutorials, but I could not find a way to do this. I have tried to use the mesh size function, but it seems to apply the same size to the whole geometry. Is there a way to define different mesh sizes for different regions or layers in GiD?

[escolano]

You can assign desired mesh sizes to geometrical entities
See the 'GiD user manual' tutorial chapters about 'Assign mesh sizes'
https://gidsimulation.atlassian.net/wik ... MESH+SIZES
and 'Methods for mesh generation'
https://gidsimulation.atlassian.net/wik ... GENERATION
Can also assign to create a boundary layer mesh typical of CFD simulations (menu Mesh->Boundary layer)