PFEM Q&A

[MiguelARV16]

Hello.
I'm trying to work with the PFEM application for fluids, but I'm getting this error:

Traceback (most recent call last):
File "C:\ejemplo_pfem_2D_fluid.gid\MainKratos.py", line 40, in
analysis_stage_module = importlib.import_module(analysis_stage_module_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Program Files\GiD\GiD 17.1.0d\scripts\tohil\python\Lib\importlib_init_.py", line 90, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "", line 1387, in _gcd_import
File "", line 1360, in _find_and_load
File "", line 1310, in _find_and_load_unlocked
File "", line 488, in _call_with_frames_removed
File "", line 1387, in _gcd_import
File "", line 1360, in _find_and_load
File "", line 1324, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'KratosMultiphysics.PfemFluidDynamicsApplication'

[FraJoMen]

Hi Miguel,

Did you manage to solve the issue with the missing PfemFluidDynamicsApplication module? I'm curious to know if you were able to complete your simulation, as I'm currently working on a related topic and facing similar uncertainties.

Before diving deeper into Kratos, I’d like to better understand its current capabilities for PFEM-based simulations. My goal is to model shallow landslides or debris flows using PFEM (particularly with large soil deformations and possible fluid–soil interaction), but I want to assess the current viability of this approach within Kratos.

Specifically, I’d like to know:

1. Whether PfemApplication and PfemFluidDynamicsApplication are actively supported and usable for geomechanical simulations (e.g., slope failures, saturated soil collapse).
2. What constitutive models are currently available and compatible with such simulations.
3. Are there any working examples or recommended Python workflows to set up coupled PFEM simulations involving both fluids and solids?

If anyone has updates or insights on the current state of PFEM in Kratos, I’d really appreciate it. Thanks in advance!

Best regards,
Francisco

[rubenzorrilla]

@AFranci is the right person to answer all your queries.

[rubenzorrilla]

Hello. I'm trying to work with the PFEM application for fluids, but I'm getting this error:

Traceback (most recent call last): File "C:\ejemplo_pfem_2D_fluid.gid\MainKratos.py", line 40, in analysis_stage_module = importlib.import_module(analysis_stage_module_name) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Program Files\GiD\GiD 17.1.0d\scripts\tohil\python\Lib\importlib__init__.py", line 90, in import_module return _bootstrap._gcd_import(name[level:], package, level) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "", line 1387, in _gcd_import File "", line 1360, in _find_and_load File "", line 1310, in _find_and_load_unlocked File "", line 488, in _call_with_frames_removed File "", line 1387, in _gcd_import File "", line 1360, in _find_and_load File "", line 1324, in _find_and_load_unlocked ModuleNotFoundError: No module named 'KratosMultiphysics.PfemFluidDynamicsApplication'

Per regards this. It seems as easy as not having PfemFluidDynamicsApplication compiled.

[AFranci]

Dear Francisco,
You can email me to introduce yourself and provide more details about the problem you want to simulate.
I will be happy to answer.
Regards,
Alessandro