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Re: Source term

From: Bourriche Lahoussaine
Subject: Re: Source term
Date: Thu, 2 Jun 2022 14:14:42 +0200 (CEST)

No it's  a list of values ( not expression).
Do you have an idea how to deal with this 


Lahoussaine BOURRICHE
3A, ENSEEIHT , Physique numérique
+33 6 20 76 17 12

----- Mail d’origine -----
De: Konstantinos Poulios <>
À: Bourriche Lahoussaine <>
Cc: getfem-users <>
Envoyé: Thu, 02 Jun 2022 13:54:57 +0200 (CEST)
Objet: Re: Source term


When you say that you have a value for each element, do you have an
analytic expression for that, or do you have something like a list with
element number --> value?

If you have an analytic expression then you can use md.interpolation(....)
to assign your source data to a model variable. Something like this
(assuming that your problem variable is called u):

N = m.dim()
mf = gf.MeshFem(m,N)
mf.set_classical_fem(0) # zero degree fem, i.e. discontinuous
md.add_fem_data("source", md.interpolation(".....", mf, RG_ID))
md.add_linear_term(mim, "source.Test_u", RG_ID)


On Thu, Jun 2, 2022 at 11:54 AM Bourriche Lahoussaine <> wrote:

> Hello
> I want to define a source term in a specific region, the source is a
> vector of values ( for each elemnt i have a source value ).
> How it will be?
> Cordialement
> Lahoussaine BOURRICHE

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