Re: Coupling equations

[Bourriche Lahoussaine]

Hy Tetsu
Thank you for your time.
I saw the link and it's far from what i have, my problem is kind of  :
Laplace(A) + B =0
Laplace(B) + A =0
 I suggest :
#Equation 1 :
Add_non_lineair_term( " Weak form of ( Laplace(A)  ) )")
Add_lineair_term( " Weak form of B  )")
#Equation 2 :
Add_non_lineair_term( " Weak form of ( Laplace(B)  ) )")
Add_lineair_term( " Weak form of A  )")

I disscused this with mr. Renard and he is ok with it. What do you think you

Best Lahoussaine

Cordialement

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

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De: "Tetsuo Koyama" <tkoyama010@gmail.com>
À: "Lahoussaine Bourriche" <lahoussaine.bourriche@etu.toulouse-inp.fr>
Cc: "getfem-users" <getfem-users@nongnu.org>
Envoyé: Mercredi 11 Mai 2022 15:58:06
Objet: Coupling equations

Dear Bourriche Lahoussaine

> When i have two coupling equation, how getfem knows that I m working on the 

> first equation /second equation, in other words 

> How getfem will knowz which term to put in which equation 

> 

> Add_lineair (first equation)

> Add_lineair (second equation)

We have to combine bricks to variables which is define by MeshFem object.

GetFEM builds tangent matrix on each variable.

This tutorial might helps you.

https://getfem.org/tutorial/thermo_coupling.html

Best Tetsuo