[Gmsh] how to transform target element volume to target element size?

[Roman Putanowicz]

> Hi all,
> 
> I am using the background mesh to implement adaptive mesh refinement. Based
> on previous discussions in this forum, I assume that the value at the
> vertices of background mesh is the length of target element edge. So my
> question is: if I know the target element volume, how can I transform this
> volume to the length of element edge, especially for 2D triangular and 3D
> tetrahedral elements?
> 
> If Gmsh has a way to do this, I want to keep consistent with it.
> 
> Thanks,
> 
> -- 
> Ziyu ZHANG

Hi Ziyu,

The simplest idea that comes to my mind:
If you assume that the mesh is isotropic and the mesh generator 
aims at creating the most regular shape you can calculate target
edge length from the volume assuming equilateral triangle or 
regular tetrahedron.

Regards,

Roman
-- 
Roman Putanowicz, PhD  < putanowr at l5.pk.edu.pl  >
Institute for Computational Civil Engng (L-5)
Dept. of Civil Engng, Cracow Univ. of Technology
www.l5.pk.edu.pl, tel. +48 12 628 2569, fax 2034