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From: | Yves Renard |
Subject: | Re: [Getfem-users] (no subject) |
Date: | Wed, 11 Oct 2017 11:26:55 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 |
Dear Yuri, There is of course no problem to transcribe your problem into the assembly language of Getfem. You can mixt domain and boundary terms with no problem. Just a question on the _expression_ you give : some polynomials are placed outside the integrals. Is it normal and if yes, what is the sense of this. Depending if you use the Matlab or Python or Scilab interface or if you write directly your code in C++, you can find some examples helping you to create the framework of your code in the test directories of Getfem (see http://getfem.org/tutorial/index.html) For instance, what you denote the "implicit boundary term" can be coded by an assembly string of the following form "([P5(X[1],X(2]), P6(X[1],X[2]).Grad_u + l*u)*Test_lambda - lambda*Test_u" where 'u' and 'lambda' are the unknowns and P5, P6 functions should be defined first (if you have an explicit _expression_, you can just plug it here), and 'l' is a data that should be declared. Regards, Yves. Le 10/10/2017 à 20:02, Юрий Кульчицкий a écrit :
-- Yves Renard (address@hidden) tel : (33) 04.72.43.87.08 Pole de Mathematiques, INSA-Lyon fax : (33) 04.72.43.85.29 20, rue Albert Einstein 69621 Villeurbanne Cedex, FRANCE http://math.univ-lyon1.fr/~renard --------- |
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