I’m attempting to use preCICE to couple a difficult FSI analysis in the carotid artery. The densities of the fluid and solid are close to one another, thus creating the dreaded “added mass” effect that must be overcome. I’ve initialized my flow solver (OpenFoam) with a steady state solution, and I’m attempting to use a Python action to slowly ramp up the force that’s applied to the structural mechanics solver (CalculiX). I copied the PythonAction.py file from the source code and modified it a bit in order to have it ramp the force values. I then stuck the Python file one level above the directory where I am executing the analysis because I have more than one analysis I’d like to use this Python action on. I don’t believe that is affecting my situation, but it might.
Regardless, I end up getting an error coming from PythonAction.cpp because
_module == nullptr. I added some debug statements to the source code and modified my precice-config.xml file so I could read them out in an attempt to figure out what’s going wrong. I can’t find it… Any help will be most appreciated.