Search found 9 matches

by Sinko Fang
Fri May 05, 2023 6:47 am
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Inquiry about the pressure drop in 1D simulation after stenosis
Replies: 3
Views: 287

Re: Inquiry about the pressure drop in 1D simulation after stenosis

davep wrote:
Thu May 04, 2023 12:05 pm
Hello,

Are you using the 1D stenosis element?

Cheers,
Dave
Hi, thank you for your reply. Yes, I used the multiple segments for the branch, and I checked the oneD model and in file. which contained the information of cell array "stenosis" and stenosis segments descriptions.
by Sinko Fang
Tue May 02, 2023 2:15 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Inquiry about the pressure drop in 1D simulation after stenosis
Replies: 3
Views: 287

Inquiry about the pressure drop in 1D simulation after stenosis

Hi all, Recently I'm using the 1D model for the coronary simulation, the pressure drop was fine in 3D simulation. Then the same configuration was applied for the ROM 1d simulation, the results are not weird to me. The drop drop did happen on the stenosis region. However, the pressure will increase j...
by Sinko Fang
Mon Apr 24, 2023 11:16 am
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Inquiry about the pressure in the inlet
Replies: 2
Views: 681

Re: Inquiry about the pressure in the inlet

Did you also use the resistance BC for other CFD software packages? You can start with a zero pressure BC for all software packages you want to compare as the baseline. Then consider comparing resistance or RCR. For commercial CFD software packages, did you use a UDF function to implement the resis...
by Sinko Fang
Wed Mar 29, 2023 2:54 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Inquiry about the pressure in the inlet
Replies: 2
Views: 681

Inquiry about the pressure in the inlet

Hi guys, Recently I am trying to compare simvascular CFD results with other software CFD results as validation analysis for my project. I used resistance boundary condition for all the outlets, but the pressure distribution is not correct for other CFD software. In my wrong simulation results, the o...
by Sinko Fang
Thu Feb 23, 2023 3:26 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: Inquiry about the projection of results on centerline
Replies: 2
Views: 170

Inquiry about the projection of results on centerline

Hi all, Recently I am testing the python API for the OneD solver and I can use "extract_results.run()" to output the results to csv files. However, in the GUI we can select to project the results on centerline. Any suggestion on projection of results on centerline by python API? Any reply is appreci...
by Sinko Fang
Thu Oct 20, 2022 12:36 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: The radius_meshing_centerlines option must be a vtkPolyData object
Replies: 4
Views: 250

Re: The radius_meshing_centerlines option must be a vtkPolyData object

Hi Sinko, I just ran https://github.com/SimVascular/SimVascular-Tests/blob/master/new-api-tests/meshing/tetgen-mesh-radius-based-meshing.py from the command line and it worked fine. You should make sure that the vtkPolyData object your are reading actually has data, in particular it needs to have a...
by Sinko Fang
Wed Oct 19, 2022 2:50 pm
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: The radius_meshing_centerlines option must be a vtkPolyData object
Replies: 4
Views: 250

Re: The radius_meshing_centerlines option must be a vtkPolyData object

Hello, The value for the options.radius_meshing_centerlines option should be a geometry containing centerlines, you are setting it to an empty vtkPolyData object. You can use help(sv.meshing.TetGenOptions) to display documentation. | radius_meshing_centerlines | Type: vtkPolyData object | Default: ...
by Sinko Fang
Wed Oct 19, 2022 10:39 am
Forum: SimVascular: Cardiovascular Modeling and Simulation Application
Topic: The radius_meshing_centerlines option must be a vtkPolyData object
Replies: 4
Views: 250

The radius_meshing_centerlines option must be a vtkPolyData object

Hi all, I am not sure did you guys ever try the python console for the radius meshing since I noticed that it was mentioned in the python API website. Recently I saw an issue about the TetGenOptions. For example. we can open the python console in Simvascular GUI, then import sv and vtk. After that, ...