Javi Gárate

So, what should be written in the MDPA? a submodelpart with the nodes and the element connectivities?

That is not possible in this moment. You can set a different linear solver for different variables, like Fluid Dynamics app does: - One for Velocity - One for Pressure...

Have you got an example that shows the error?

Ok, This was reported but it wasn't a priority See #146 As I see it's important I can try to do it before another. It should not be "time expensive"

@rubenzorrilla @antonialarese @RiccardoRossi

```json { "problem_data" : { "problem_name" : "coupling_test_1_mesh_size_04", "start_time" : 0.0, "end_time" : 15.0, "echo_level" : 0, "parallel_type" : "OpenMP", "threads" : 8, "gravity_vector" : [0.0,-9.81,0.0] }, "solver_settings" : {...

I've created this branch for this issue. Please edit the file `kratos.gid\apps\PfemFluid\xml\ConstitutiveLaws.xml` to add new constitutive laws to the Fluid Pfem Application

@annasophie91 it's better if you can change it in python

@ipouplana I'm trying to understand the example [Small Box](https://github.com/KratosMultiphysics/Examples/tree/master/swimming_dem/use_cases/PFEMFluid_Element/One_Way/Small_Box_Lagrangian_OW) and the first I see is that the json is difficult to be generated. Look at [FSI](https://github.com/KratosMultiphysics/Examples/tree/master/swimming_dem/use_cases/PFEMFluid_Element/One_Way/Small_Box_Lagrangian_OW) [Conjugate heat transfer](https://github.com/KratosMultiphysics/Examples/tree/master/conjugate_heat_transfer/validation/cylinder_cooling_Re100_Pr2) I...

Working on branch https://github.com/KratosMultiphysics/GiDInterface/pull/810