Learning Forum

[Swapnil]

I have been doing two-way FSI simulation for leaflet valve motion. I am facing issue of highly distorted solid element near the corners. What are the possible solutions for this case?

I am using smoothing and remeshing for handling dynamic motion of tetrahetral mesh.

[Federico]

Hello, 

can you show how you have set up your Dynamic Mesh zones?

[Swapnil]

I have tried both diffusive-based and spring-based smoothing. Remeshing is performed based on length scale and skewness of local cell.

[Petros]

Can you try adding at least 3 elements in the thickness of the solid region? Also try and see how the default of Unified Remeshing works before switching to Methods-Based Remeshing.

[Swapnil]

I tried with a refined mesh, but the issue still persists. 

[Emmanuel-akor]

Hi Swapnil, Your deformation values seems small so you shouldnt see high distortion. Your deformation result might be autoscaled. If you change the scale to 1 somewhere at the top menu, you should be fine. I've had this problem in the past with my FSI and thought I was doing something wrong.

[Swapnil]

Hi Emmanuel, thank you for your response. The error showing "high distortion in solid element" pops up in initial iterations itself. Therefore simulation is not complete.