Provides a system for patient-specific cardiovascular modeling and simulation.
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François de Kermenguy
- Posts: 13
- Joined: Sat Oct 02, 2021 12:08 am
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by François de Kermenguy » Fri Dec 17, 2021 8:33 am
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
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David Parker
- Posts: 1705
- Joined: Tue Aug 23, 2005 2:43 pm
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by David Parker » Fri Dec 17, 2021 12:27 pm
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