Hello,
[The question may be trivial ]
In the different simulation examples you propose, the .flow file used as inlet boundary conditions is a flow rate (L/min or cc/sec) as a function of time. This file is used as "Prescribed velocity". I assume that SimVascular divides this flow by the inlet area to determine the inlet velocity. But then what happens if we prescribe a velocity (and not a flow) in the inlet (or in a outlet) ?
Thank you in advance!
fdekerme
Question about Inlet Boundary Conditions
- François de Kermenguy
- Posts: 13
- Joined: Sat Oct 02, 2021 12:08 am
- David Parker
- Posts: 1705
- Joined: Tue Aug 23, 2005 2:43 pm
Re: Question about Inlet Boundary Conditions
Hi fdekerme,
There is no such thing as a trivial question!
Correct, SV converts the flow profile into nodal velocities using the area of the vessel cap, this is a preprocessing step that creates a bct.dat. In the solver all velocity boundary conditions are specified as nodal vector quantities read from the bct.dat file, read from a .vtu file, or as a constant over the vessel cap.
You can create the bct.dat file directly from experimental data, like PC-MRI.
Cheers,
Dave
There is no such thing as a trivial question!
Correct, SV converts the flow profile into nodal velocities using the area of the vessel cap, this is a preprocessing step that creates a bct.dat. In the solver all velocity boundary conditions are specified as nodal vector quantities read from the bct.dat file, read from a .vtu file, or as a constant over the vessel cap.
You can create the bct.dat file directly from experimental data, like PC-MRI.
Cheers,
Dave
- François de Kermenguy
- Posts: 13
- Joined: Sat Oct 02, 2021 12:08 am
Re: Question about Inlet Boundary Conditions
nice, thanks a lot for the answer!