[Gmsh] Error transfinite volume

[Amit Itagi]

Christophe,

Is it possible to include "progression" in the layers for the extrusion step
? Ultimately, that is what I want. Hence, I was avoiding extrusion.  If that
is not possible, could you tell me that rule for the node ordering ?

Thanks

Rgds,
Amit



On Wed, Nov 5, 2008 at 2:08 PM, Christophe Geuzaine <cgeuzaine at ulg.ac.be>wrote:

> David Colignon wrote:
>
>> Hi Amit,
>>
>> the ordering of the nodes in your "Transfinite Volume" commands is not
>> correct. You should have:
>>
>> Transfinite Volume{233}={1,2,3,4,101,102,103,104};
>> Transfinite Volume{235}={1,2,6,5,101,102,106,105};
>> Transfinite Volume{237}={2,3,7,6,102,103,107,106};
>> Transfinite Volume{239}={3,4,8,7,103,104,108,107};
>> Transfinite Volume{241}={4,1,5,8,104,101,105,108};
>>
>>
> PS : for this kind of geometry it is probably simpler to use extrusion
>
>
> Point(1) = {-1,-1,0,0.2};
> Point(2) = {1,-1,0,0.2};
> Point(3) = {1,1,0,0.2};
> Point(4) = {-1,1,0,0.2};
> Line(1) = {1,2};
> Line(2) = {2,3};
> Line(3) = {3,4};
> Line(4) = {4,1};
> Line Loop(5) = {4,1,2,3};
> Plane Surface(6) = {5};
> Point(5) = {-5,-5,0,1};
> Point(6) = {5,-5,0,1};
> Point(7) = {5,5,0,1};
> Point(8) = {-5,5,0,1};
> Line(5) = {5,6};
> Line(6) = {6,7};
> Line(7) = {7,8};
> Line(8) = {8,5};
> Line(9) = {1,5};
> Line(10) = {2,6};
> Line(11) = {3,7};
> Line(12) = {4,8};
> Line Loop(13) = {1,10,-5,-9};
> Plane Surface(14) = {13};
> Line Loop(15) = {2,11,-6,-10};
> Plane Surface(16) = {15};
> Line Loop(17) = {3,12,-7,-11};
> Plane Surface(18) = {17};
> Line Loop(19) = {4,9,-8,-12};
> Plane Surface(20) = {19};
>
> Transfinite Line{1,2,3,4}=5;
> Transfinite Line{5,6,7,8}=5;
> Transfinite Line{9,10,11,12}=5 Using Progression 1.2;
>
> Transfinite Surface{6}={1,2,3,4};
> Transfinite Surface{14}={1,2,6,5};
> Transfinite Surface{16}={2,3,7,6};
> Transfinite Surface{18}={3,4,8,7};
> Transfinite Surface{20}={4,1,5,8};
>
> Recombine Surface{6,14:20:2};
> Extrude {0, 0, 10} {
>  Surface{20, 18, 16, 14, 6}; Layers{5}; Recombine;
> }
>
>
>  Cheers,
>>
>> Dave
>>
>>
>
> --
> Prof. Christophe Geuzaine
> University of Liege, Electrical Engineering and Computer Science
> http://www.montefiore.ulg.ac.be/~geuzaine<http://www.montefiore.ulg.ac.be/%7Egeuzaine>
>
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