[Gmsh] Define Physical Surface on Extruded Geometry

Christophe Geuzaine cgeuzaine at ulg.ac.be
Sun Feb 24 18:47:55 CET 2008


Oka Kurniawan wrote:
> Hi,
> I am a newbie in using Gmsh,
> 
> I am wondering whether we can define physical entities, such as
> surface from an extruded surface.
> 
> Below is my .geo file
> 
> How can I define a Physical Surface on the 4 sides of the block?
> 

Physical Surface(1000)={out[{2,3,4,5}]};



> Thanks.
> 
> lc=0.1;
> Point(1)={0.,0.,0.,lc};
> Point(2)={1.36,0.,0.,lc};
> Point(3)={1.36,1.36,0.,lc};
> Point(4)={0.,1.36,0.,lc};
> 
> Line(1)={1,2};
> Line(2)={2,3};
> Line(3)={3,4};
> Line(4)={4,1};
> 
> Line Loop(5)={1,2,3,4};
> 
> Plane Surface(6)={5};
> 
> //extrude to create volume
> out[]=Extrude {0,0,15} {
> 	      Surface{6};Layers{50};Recombine;
> };
> 
> 
> Physical Volume(99)={out[1]};
> Physical Surface(98)={out[0]};
> 
> _______________________________________________
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> 
> 


-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine