Hi Kamil,

Basically, characteristic length is a length of a mesh edge (on a line connecting points where the characteristic length is defined). But you can find more information about it searching in Gmsh's mailing list archive http://geuz.org/pipermail/gmsh/

Best,
Mikhail

On 09/20/2014 10:56 AM, [email protected] wrote:
I recognized that this is a problem about characteristic length
parameter. In my .geo files, I set it as 1. However, I didn't understand
ito which value do I have to increase or decrease this parameter. I read
the manual of gmsh but couldn't clearly understand the relation between
characteristic length and mesh. Can you please give a brief information
about this?


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