[Stan Zhou]

Hi, everyone!

I want to add layers on a structure in my simulation using snappyHexMesh but I encountered a problem as follow.



https://sites.google.com/site/snappy...-relativeSizes


According to the website above, in order to add layers, the patches on which attach the layers have to be specified. For example,


// Per final patch (so not geometry!) the layer information
layers
{
my_first_subregion
{
nSurfaceLayers 4;
}
}



My question is how to obtain the names of the patches in the stl file?


Thanks for your help!

[ErenC]

Question actually is how are you going to give BC to a patch without knowing its name? So I really haven't understood your question. You need to give names to the patches before using them in "any" mesh software.

[Stan Zhou]

Originally Posted by ErenC

Question actually is how are you going to give BC to a patch without knowing its name? So I really haven't understood your question. You need to give names to the patches before using them in "any" mesh software.

Firstly, I used AUTOCAD to create an object on which I want to add layers in the fluid domain. So I generate a stl file of this object and put it in the triSurface folder. However, while adopting snappyHexMesh utility to add layers on my object, the patches on which attach the layers have to be specified. I opened the stl file of my object to find the different patch names of the object, but there are only messy codes.

Thus, my question is how to get the patch names of my object in the stl file?

[Yann]

Hello,


Here is two different solutions:

1. Run the surfaceCheck utility, it will, among other things, give you the name and size of the different regions contained in your STL file.
2. Export your STL file in ASCII format, open it with a text editor and search for the lines starting with "solid". It should be followed by the name of the region.

Regards,
Yann

[Stan Zhou]

Originally Posted by Yann

Hello,


Here is two different solutions:

1. Run the surfaceCheck utility, it will, among other things, give you the name and size of the different regions contained in your STL file.
2. Export your STL file in ASCII format, open it with a text editor and search for the lines starting with "solid". It should be followed by the name of the region.

Regards,
Yann

Thanks for your suggestions! They are exactly what I need.