hi, david,
I have made a very simple cylinder data which a small one is inside. So it can simulate vessel ans stent inside.
https://drive.google.com/open?id=1yGgaJ ... -AE-mhpW8i
I can import the model , and seperate the face. but I can not mesh it. Below is the log:
15.567 Warning Generic Warning: In S:\vtk-8.1.1\Common\Core\vtkInstantiator.cxx, line 265
vtkInstantiator::CreateInstance was deprecated for VTK 8.1 and will be removed in a future version. VtkGenericWarning mbilog mitk::VtkLoggingAdapter::DisplayGenericWarningText S:\mitk-2018.04.2\Modules\Core\src\IO\mitkVtkLoggingAdapter.cpp 50
15.663 Error ERROR: In S:\vtk-8.1.1\Filters\General\vtkTransformPolyDataFilter.cxx, line 73
vtkTransformPolyDataFilter (00000147C9A6C950): No transform defined! VtkError mbilog mitk::VtkLoggingAdapter::DisplayErrorText S:\mitk-2018.04.2\Modules\Core\src\IO\mitkVtkLoggingAdapter.cpp 40
15.669 Error ERROR: In S:\vtk-8.1.1\Filters\General\vtkTransformPolyDataFilter.cxx, line 73
vtkTransformPolyDataFilter (00000147C9A6AD30): No transform defined! VtkError mbilog mitk::VtkLoggingAdapter::DisplayErrorText S:\mitk-2018.04.2\Modules\Core\src\IO\mitkVtkLoggingAdapter.cpp 40
114.477 Info **** Activating legacy standalone functionality mbilog QmitkFunctionalityCoordinator::ActivateStandaloneFunctionality S:\mitk-2018.04.2\Plugins\org.mitk.gui.qt.common.legacy\src\QmitkFunctionalityCoordinator.cpp 177
114.480 Info setting active flag mbilog QmitkFunctionalityCoordinator::ActivateStandaloneFunctionality S:\mitk-2018.04.2\Plugins\org.mitk.gui.qt.common.legacy\src\QmitkFunctionalityCoordinator.cpp 182
implantation virtual stent
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David Parker
- Posts: 1651
- Joined: Tue Aug 23, 2005 2:43 pm
Re: implantation virtual stent
Hi Gang,
I had a look at the cylinder STL model. It appears that there is cylindrical cavity within the cylinder model. I'm not sure how to get this kind of complex geometry to mesh with TetGen.
Is this what you want to model, a fluid flowing over a solid region? If so then you need to use the svFSI solver where you can define a fluid and a solid mesh.
If you want to do a simpler stent model using svSolver then your stent geometry should be subtracted out from the vessel geometry. See the attached image that shows what the outside of the mesh should look like.
Cheers,
Dave
I had a look at the cylinder STL model. It appears that there is cylindrical cavity within the cylinder model. I'm not sure how to get this kind of complex geometry to mesh with TetGen.
Is this what you want to model, a fluid flowing over a solid region? If so then you need to use the svFSI solver where you can define a fluid and a solid mesh.
If you want to do a simpler stent model using svSolver then your stent geometry should be subtracted out from the vessel geometry. See the attached image that shows what the outside of the mesh should look like.
Cheers,
Dave
- Attachments
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- Screen Shot 2020-04-01 at 6.11.22 PM.png (145.32 KiB) Viewed 294 times
Re: implantation virtual stent
hi, David,
How are you?
Thank you for the detail explanation.
And I want to simulate the stent graft or filuid direction in the vascular , so vascular surface not connect to stent or FD everywhere, maybe just only a small part. So large part will disconnect each other, there will be cavitiy. So I think boolean subtraction may not make sense for this case? or SV(or tetgen) can not handle this case, right?
How are you?
Thank you for the detail explanation.
And I want to simulate the stent graft or filuid direction in the vascular , so vascular surface not connect to stent or FD everywhere, maybe just only a small part. So large part will disconnect each other, there will be cavitiy. So I think boolean subtraction may not make sense for this case? or SV(or tetgen) can not handle this case, right?
-
David Parker
- Posts: 1651
- Joined: Tue Aug 23, 2005 2:43 pm
Re: implantation virtual stent
Hi Gang,
There really should not be a problem meshing a cavity, this seems to be a problem with how SV is using the TetGen mesh generator or how the model faces are created (internal faces should have opposite orientation I think).
I think you will need to use svFSI to solve a problem with an internal solid.
Cheers,
Dave
There really should not be a problem meshing a cavity, this seems to be a problem with how SV is using the TetGen mesh generator or how the model faces are created (internal faces should have opposite orientation I think).
I think you will need to use svFSI to solve a problem with an internal solid.
Cheers,
Dave