I think there is a mismatch between the face names and intended boundary condition. For e.g., cara_lateral_1.vtp has a normal along y-direction and you named it as Y0, but cara_lateral_1sym.vtp has normal along x-direction, although you are assuming it to be along y-direction and applying displaceme...

Hi, I have looked at your input file, and it appears that you are trying to do FSI in the pipe3D svFSI-Tests but using different wall properties. If yes, then one projection that you missed is between WALL1-outlet and WALL2-inlet. Instead of a projection, you are setting Dirichlet BCs with 'Zero out...

In principle, yes. You can apply General BC even if you have many data points, but the input file size will be large. Unless there is some reason for you to apply the exact profile, you may create a smooth interpolant that is periodic, e.g., by using Fourier modes. This will also reduce the total nu...

Can you post the case files on Drive or Dropbox? It is better to take a closer look at these before suggesting anything.

-- Vijay

You have a very steep rise and fall in the flow rates in your input file. The code uses Fourier modes internally to interpolate this prescribed flow rate at each time step. However, Fourier modes cannot capture such sharp gradients and will create a smoother profile, which is sometimes oscillatory. ...

Are these multiple solid domains connected? Do they share a common boundary? If so, you don't have to create them as separate mesh entities, but only set Domain IDs for each of the domains where you would like to set different constitutive models. Can you post a picture of the problem you are trying...

Hi Valentina, I don't think we add the feature to do FSI with shells. So you should simulate the membrane using a thin solid. To your other question regarding meshing, I am not clear if I understand it right. But, you're right that SimVascular only creates linear tetrahedral mesh elements. I am not ...

The dimensions of the diffusivity coefficient is [Length^2/Time] as indicated in the documentation

https://simvascular.github.io/documenta ... p-modeling

Hi Joanne, Usually, you need to perform registration, either a point-set registration or image-based registration, to extract nodal displacements and impose them to perform a prescribed-wall motion FSI simulation. Documentation on setting up such a simulation is provided here . Reg. the reference yo...

Hi Dave, Thanks, but usually the algorithm is designed in such a way that it should find all the nodes in a couple of passes. This case appears peculiar. Let me know if I can help in any way. One thing that is unclear to me is that although the baseline fluid mesh has only 11514 nodes (or ~44K eleme...