[Getdp] GlobalTerm in 2D Cap
Luis Saavedra
luis94855510 at gmail.com
Tue May 15 04:16:35 CEST 2018
In this técnical paper P. Dular explain a little of the theory...
El jue., abr. 12, 2018 1:43, RAGHURAM T.R. <121704004 at smail.iitpkd.ac.in>
escribió:
> Dear Christophe,
>
> Thank you. I shall see to the tutorial example.
>
> Regards,
> Raghu
>
> On Wed, Apr 11, 2018 at 12:13 PM, Christophe Geuzaine <geuzaine at gmail.com>
> wrote:
>
>>
>> Dear Raghu,
>>
>> See Tutorial 4 on https://gitlab.onelab.info/doc/tutorials/wikis/home :
>> the comments in the .pro file (
>> https://gitlab.onelab.info/doc/tutorials/blob/master/ElectrostaticsFloating/floating.pro)
>> provide a detailed explanation.
>>
>> Christophe
>>
>> On 11 Apr 2018, at 06:50, RAGHURAM T.R. <121704004 at smail.iitpkd.ac.in>
>> wrote:
>>
>> Dear all,
>>
>> Could you please explain the "*GlobalTerm*" used in 2D capacitor
>> formulation as below:
>>
>> Formulation {
>>
>> { Name for_v ; Type FemEquation ;
>> Quantity {
>> { Name v; Type Local; NameOfSpace fs_vglob; }
>> { Name Q; Type Global; NameOfSpace fs_vglob [GlobalElectricCharge]; }
>> { Name V; Type Global; NameOfSpace fs_vglob [GlobalElectricPotential]; }
>> }
>> Equation {
>> Galerkin { [ epsr[]*Dof{d v} , {d v} ] ; In Vol; Jacobian Vol ; Integration Int ; }
>> // div epsr[] grad v=0
>>
>> GlobalTerm { [ -Dof{Q}/eps0 , {V} ] ; In Grouped ; }
>> }
>> }
>> }
>>
>>
>> I understand that the aim is to calculate the voltage (v) and the
>> Galerkin term implements the Laplace equation in weak form. But what does
>> the GlobalTerm implement? The Grouped domain consists of the two plates
>> (One plate is given a fixed voltage and the other plate is grounded). I
>> also read from the example that the GlobalTerm is used when the variable to
>> be calculated is constant throughout a region and also that the GlobalTerm
>> do not perform integration. I hope my understanding is right. Please help
>> me in understanding this further in this context.
>>
>> Many thanks in advance.
>>
>> Regards,
>> Raghu
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>>
>>
>>
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