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From: | Dominique Fratantonio |
Subject: | Re: [Getfem-users] Question about the function 'add_normal_Dirichlet_condition_with_penalization' |
Date: | Mon, 23 Feb 2015 09:58:48 +0100 |
KostasBest regardsAm I missing something?Hi, I am wondering where is the link for 4.3.2 (or even 4.3.1) here:I can only see the tarball for 4.3.
http://download.gna.org/getfem/stable/On Sun, Feb 22, 2015 at 5:54 PM, Dominique Fratantonio <address@hidden> wrote:_______________________________________________Hi,I'm using getfem-4.3.2 and I am having some problem with the function 'add_normal_Dirichlet_condition_with_penalization'.Here an extract of how I am implementing it://--------------------------------------------------------------------------------------------------------------------------------------------------//// Main unknown of the problem:model.add_fem_variable("u", mf_u);// Viscous term// Linearized elasticity brick:model.add_initialized_fixed_size_data("lambda", plain_vector(1, 0.0)); // Second viscosity coefficientmodel.add_initialized_fixed_size_data("nu", plain_vector(1, 1/(pd.Re)));getfem::add_isotropic_linearized_elasticity_brick(model, mim, "u", "lambda", "nu");// Incompressible constraint// p used as Lagrange multiplier, but it doesn't need to be// add_multiplier as for the Dirichlet boundary conditions// Linearized incompressibility condition brick:model.add_fem_variable("p", mf_p);getfem::add_linear_incompressibility(model, mim, "u", "p");// Dirichlet condition on inflow:std::vector<scalar_type> F(mf_u.nb_dof());gmm::clear(F);getfem::interpolation_function(mf_u, F, u_exact);model.add_initialized_fem_data("InflowData", mf_u, F);if (PENALIZATION_INFLOW && act_DNS) {// With penalizationscalar_type dirichlet_coefficient_inflow = 1e8;getfem::add_Dirichlet_condition_with_penalization(model,mim,"u",dirichlet_coefficient_inflow,INFLOW_BOUNDARY_NUM,"InflowData");} else {// With multipliersmodel.add_multiplier("Inflow", mf_mult_inflow, "u", mim, INFLOW_BOUNDARY_NUM);getfem::add_Dirichlet_condition_with_multipliers(model, mim, "u","Inflow",INFLOW_BOUNDARY_NUM,"InflowData");}// Dirichlet condition on cylinder:bgeot::base_vector no_penetration(1); no_penetration[0]=0;model.add_initialized_fixed_size_data("CylinderData",no_penetration);if (PENALIZATION_CYL && act_DNS) {// With penalizationscalar_type dirichlet_coefficient_cyl = 1e8;getfem::add_normal_Dirichlet_condition_with_penalization(model,mim,"u",dirichlet_coefficient_cyl,CYLINDER_BOUNDARY_NUM,"CylinderData");} else {// With multipliersmodel.add_multiplier("Cylinder", mf_mult_cyl, "u", mim, CYLINDER_BOUNDARY_NUM);getfem::add_normal_Dirichlet_condition_with_multipliers(model,mim,"u","Cylinder",CYLINDER_BOUNDARY_NUM,"CylinderData");}// Build matricesmodel.assembly(getfem::model::BUILD_ALL);//------------------------------------------------------------------------------------------------------------------------------------------------------//In the above extract of the code, everything works fine except when I try to use 'add_normal_Dirichlet_condition_with_penalization'.The similar function 'add_Dirichlet_condition_with_penalization' works fine as well.Altought I succeed in compiling the code, when 'add_normal_Dirichlet_condition_with_penalization' runs, I obtain the following error://------------------------------------------------------------------------------------------------------------------------------------------------------//Trace 2 in getfem_models.cc, line 5667: Stiffness matrix assembly for isotropic linearized elasticityTrace 2 in getfem_models.cc, line 5931: Stokes term assemblyTrace 2 in getfem_models.cc, line 3157: Mass term assembly for Dirichlet conditionTrace 2 in getfem_models.cc, line 3201: Source term assembly for Dirichlet conditionTrace 2 in getfem_models.cc, line 3157: Mass term assembly for Dirichlet condition============================================| An error has been detected !!! |============================================Error in getfem_assembling_tensors.cc, line 488 :Non matrix field//------------------------------------------------------------------------------------------------------------------------------------------------------//I really do not understand how to fix this problem and what it means.Thank you in advance.Cheers.
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