Dear Lahoussaine Your weak formulation is not correct I guess.
Laplacian(A)+B.Test_A=0 Laplacian(B)+A.Test_B=0 Test function defines which part of equation it is. Laplacian brick includes Test function inside. 2022年5月11日(水) 23:31 Bourriche Lahoussaine < lahoussaine.bourri...@etu.toulouse-inp.fr>: > Thank you > But what it bothers me is that this implementation is the same as > Laplace (A)+B+Laplace(B)+A=0 implementation's > > Two things different with the same implementation > > Cordialement > > > Lahoussaine BOURRICHE > 3A, ENSEEIHT , Physique numérique > +33 6 20 76 17 12 > > ------------------------------ > *De: *"Tetsuo Koyama" <tkoyama...@gmail.com> > *À: *"LahouDearssaine Bourriche" < > lahoussaine.bourri...@etu.toulouse-inp.fr> > *Cc: *"getfem-users" <getfem-users@nongnu.org> > *Envoyé: *Mercredi 11 Mai 2022 16:23:59 > *Objet: *Re: Coupling equations > > Dear Bourriche > > Thank you for reply. > I also think it works. > > Best Tetsuo > > 2022年5月11日(水) 23:13 Bourriche Lahoussaine < > lahoussaine.bourri...@etu.toulouse-inp.fr>: > >> 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 >> >> ------------------------------ >> *De: *"Tetsuo Koyama" <tkoyama...@gmail.com> >> *À: *"Lahoussaine Bourriche" <lahoussaine.bourri...@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 >> >> >> > >
