[Gmsh] bug in isotropic mesh generator

[Christophe Geuzaine]

remacle wrote:
> Paardenkooper, Timo wrote:
> 
>> Dear Christophe Geuzaine,
>>
>>  
>>
>> I have encountered a bug in the isotropic mesh generator. With the geo 
>> file attached, you can see the symptom yourself.
>>
>> The 2 D mesh generates elements outside the geometry contour in case 
>> of a small radius.
>>
>>  
>>
>> Use isotropic algorithm, then mesh>1d>2d, then zoom in at the smallest 
>> radius (0,1).
>>
>>  
>>
>> Kind regards,
>>
> In Options->Mesh->General, change the perturbation factor to 0.00001
> 

You can also use the "Triangle" algorithm: the resulting mesh is not as
nice, but it is more robust.

Christophe


> 
> JFR
> 
>>  
>>
>> T.Paardenkooper
>>
>>
>> This e-mail and its contents are subject to the DISCLAIMER at 
>> http://www.tno.nl/disclaimer/email.html
>>
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> gmsh mailing list
>> gmsh at geuz.org
>> http://www.geuz.org/mailman/listinfo/gmsh
>>  
>>
> 
> 


-- 
Christophe Geuzaine
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org