Hi, I have a question about generating meshes for a moving wall flow simulations. According to the documentation at https://simvascular.github.io/documentation/simcardio.html it seems there are 4 steps: 1. Segmentation 2. Surface and Volume Mesh Generation using surface_main.py and volume_mesh_main....

Hi, I am trying to run FSI simulations that take into account pre-stress. In the pre-stress ALE example, there is a Python code that extracts the pressure and traction from a CFD simulation for use in the pre-stress simulation. Does anyone know if it's possible to simply extract the pressure from th...

Hi, I'm running SimVascular version 2023.3.27 with svFSI version 2023.5.25 using Ubuntu 20 on VirtualBox with OpenMPI. I'm following along with the cylinder tutorial in https://www.youtube.com/watch?v=N4AIL-zq3XM&list=WL&index=1. After creating the input file and trying to run the simulation, I get ...

Hi, I'm running simulations on the SV Gateway server and they fail to start and say that cmake and openmpi cannot be loaded as requested, OpenFabrics support will be disabled, and rcrt.dat cannot be opened. I attached a link to the stderr, stdout, and simulation files. The simulation files were made...

Dave, I don't necessarily care about divergence. I'm verifying simulation results, and divergence initially seemed like a simple way to check the physical consistency of the results. I stumbled across this issue, and didn't just want to ignore it. I'm now trying to gauge whether the results are actu...

Hi Dave,

The interior results for the demo seem to be similar. The original results I posted are also interior snapshots btw.

It makes a bit more sense knowing that it's just an approximation. Is there a better method for computing the divergence that you suggest using?

Thanks,
Moses

I am using the 2022-08-19 Windows version of the svSolver and Paraview version 5.10.0. Paraview has a filter that computes the gradient, divergence, and vorticity of the velocity from the point data in the vtu output files. I did some more digging. I downloaded the example project from https://simtk...

Hi, I have been running laminar blood flow simulations using incrementally smaller time steps in order to verify simulation convergence. The residuals and Courant numbers suggest that the simulations did indeed converge. However, when I analyzed the results in paraview, I found that the divergence o...

Thanks David! Quick follow up: I plan to use the SV gateway's svPre feature once I create the .svpre file. However, it also requires the mesh-complete file. Is there an example script of how to create that using the Python API?

Hi, I see that fluid simulations can be created using sv.simulation.Fluid(). However, it appears that only velocity and resistance boundary conditions are supported. Is there a way to implement rcr boundary conditions in fluid simulations using the Python API? Or if not, is there a way to manually c...