[Getdp] issue with 2D axisymetric solenoid magnet resolution

Ruth V. Sabariego r.sabariego at ulg.ac.be
Tue Feb 12 15:54:49 CET 2013


Indeed, that was the problem. ;-)

BTW, you should due to the axisymmetry, you should multiply CompZ[A] by X[] for getting the actual magnetic vector potential.

Ruth


 
On 12 Feb 2013, at 15:49, Frederic Trillaud <ftrillaudp at pumas.ii.unam.mx> wrote:

> Hi Ruth,
> 
> I think that I found my answer. Here is a solution using VolAxiSphVolume
> and VolAxi instead of VolSphVolume and Vol in the Jacobian method. The
> picture in my previous email was obviously the module of B and not the
> potential vector! (my bad). Here is a new picture with, I think, a
> relatively good solution.
> 
> Frederic
> 
> On Tue, 2013-02-12 at 11:01 +0100, Ruth V. Sabariego wrote:
>> Hi Frederic,
>> The problem came from your geometry: the physical line for the
>> symmetry and infinity where you define the dirichlet boundary
>> condition was not properly defined.
>> You have to use the geometrical lines and not the loops.
>> See the small correction in the geo file. 
>> 
>> 
>> Best regards,
>> Ruth
>> 
>> 
>> 
>> 
>> 
>> On 11 Feb 2013, at 21:05, Frederic Trillaud
>> <ftrillaudp at pumas.ii.unam.mx> wrote:
>> 
>>> Dear all,
>>> 
>>> I have an issue with the solution of a 2D axi-symmetric problem
>>> consisting of a solenoid magnet. The magnet field is not as
>>> expected!
>>> 
>>> Here are the files to run the model in the example.zip attached
>>> folder.
>>> 
>>> solenoid2D.par -> parameters
>>> solenoid2D.geo -> gmsh geometry
>>> main.pro -> model in getdp
>>> magnetostaticProblem.pro -> formulation
>>> etc...
>>> 
>>> gmsh -2 solenoid2D.geo -msh solenoid2D.msh
>>> getdp main -msh solenoid2D.msh -solve potentialVectorResolution
>>> getdp main -msh solenoid2D.msh -pos fieldMap
>>> 
>>> Dirichlet is applied on the axis of symmetry and the on the external
>>> shell. A fixed current density is given normal to the cross-section
>>> plan.
>>> 
>>> I have tried with different Jacobian volume, VolAxi and
>>> VolAxiSphVolume
>>> but without success in addition to what is included in the given
>>> test.
>>> 
>>> Best regards,
>>> 
>>> Frederic
>>> <Example.zip>_______________________________________________
>>> getdp mailing list
>>> getdp at geuz.org
>>> http://www.geuz.org/mailman/listinfo/getdp
>> 
>>>> Dr. Ir. Ruth V. Sabariego
>> University of Liege, Electrical Engineering and Computer Science
>> http://ace.montefiore.ulg.ac.be/
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
> <moduleB.png>

—
Dr. Ir. Ruth V. Sabariego
University of Liege, Electrical Engineering and Computer Science
http://ace.montefiore.ulg.ac.be/







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