Search found 110 matches
- Mon Mar 30, 2020 7:31 pm
- Forum: SimVascular: Cardiovascular Modeling and Simulation Application
- Topic: Problems to set Variable Pressure with Deformable Wall condition
- Replies: 4
- Views: 380
Re: Problems to set Variable Pressure with Deformable Wall condition
Can you check if the inflow BC is correctly imposed? It seems there is no pulsatile flow in the model. Make sure you have the same svpre command for the inlet as that used in the rigid case. You can also compare the bct.dat files that prescribe the inlet velocities. The bct.dat files should be the s...
- Tue Jan 21, 2020 3:25 pm
- Forum: SimVascular: Cardiovascular Modeling and Simulation Application
- Topic: Solution won't stabilize
- Replies: 2
- Views: 393
Re: Solution won't stabilize
Is this pressure an outlet pressure with an RCR boundary condition? If so, it is likely that the gradual increase in pressure is caused by a relatively large RC constant. If I remember correctly, the RCR analytical solution includes a term for initial conditions, which decays as exp(-t/(C*Rd)). If C...
- Fri Jan 10, 2020 1:01 pm
- Forum: SimVascular: Cardiovascular Modeling and Simulation Application
- Topic: Stent graft material property
- Replies: 4
- Views: 203
Re: Stent graft material property
If the wall faces for the stent and aneurysm are separated, you can directly assign different wall properties in the pre solver script.
- Mon Dec 02, 2019 9:08 pm
- Forum: SimVascular: Cardiovascular Modeling and Simulation Application
- Topic: Calculating Resistance in LCX
- Replies: 1
- Views: 204
Re: Calculating Resistance in LCX
Assuming that the coronary circuit is parallel to the systemic circuit, P/Rcor=P/Rsystem *4/96. Therefore Rcor is ~ 24Rsystem. Yes, you can estimate the LCX resistance in this way. This is just an initial approximation. You need to adjust the values to achieve a desired flow split.
- Mon Nov 18, 2019 7:51 pm
- Forum: SimVascular: Cardiovascular Modeling and Simulation Application
- Topic: Steady case in user guide
- Replies: 1
- Views: 209
Re: Steady case in user guide
Usually, if the simulation is converged under steady flow conditions after n steps, the result for the last step is supposed to be "the same" as that for n+1. However, unsteadiness can exist even if the inflow condition is steady. For example, fluctuations in pressures and velocities can be created ...
- Mon Nov 18, 2019 6:29 pm
- Forum: SimVascular: Cardiovascular Modeling and Simulation Application
- Topic: GenBC run simulations Gateway
- Replies: 6
- Views: 271
Re: GenBC run simulations Gateway
I can find my results (proc-$numprocs.czf.tar.gz) in Storage->experiment name->ARCHIVE, If the results are not generated, can you share your files so I can take a look?
- Mon Nov 18, 2019 1:57 pm
- Forum: SimVascular: Cardiovascular Modeling and Simulation Application
- Topic: GenBC run simulations Gateway
- Replies: 6
- Views: 271
Re: GenBC run simulations Gateway
Sorry about that. The input option for user.f was somehow lost when I made some changes. I added it back. Could you please try again? I tested a cylinder with GenBC. It seems to work.
- Mon Nov 18, 2019 1:11 pm
- Forum: SimVascular: Cardiovascular Modeling and Simulation Application
- Topic: GenBC run simulations Gateway
- Replies: 6
- Views: 271
Re: GenBC run simulations Gateway
I created a new application for genbc. Can you try it?
Thx
Thx
- Sat Nov 02, 2019 8:13 pm
- Forum: SimVascular: Cardiovascular Modeling and Simulation Application
- Topic: BL + regional refinement
- Replies: 5
- Views: 219
Re: BL + regional refinement
The aneurysm is missing in your walls_combined.vtp. If you use walls_combined.vtp to set up no-slip boundary condition in your svpre file, the aneurysm wall won't be included resulting in non-zero velocities on that part. You probably need to retag the aneurysm face as wall_aneurysm and remesh the m...
- Wed Sep 25, 2019 3:47 pm
- Forum: SimVascular: Cardiovascular Modeling and Simulation Application
- Topic: Initial Condition and geometry doubts
- Replies: 6
- Views: 391
Re: Initial Condition and geometry doubts
If you already ran the simulation for at least 1 cycle, you can generate the flow and pressure curves for each face (see Postprocessing Calculate Flows in the tutorial). Plot the inflow curve and see if it agrees well with your input waveform.