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boundary conditions for pulsatile (hemodynamics) flow

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Old   June 29, 2010, 06:13
Default boundary conditions for pulsatile (hemodynamics) flow
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Gerber van der Graaf
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Dear all,
We are working on a arterial graft study of 3 to 5 mm diametre. We prefer to impose pressures at inlet and outlets. It concerns a pulsatile flow wich includes reversing of the flow at some instant. Currently we use timeVaryingUniformFixedValue for the pressure at the boundaries. Some questions have shown up:

- What would be the optimum the velocity conditions at inlet and outlet?
- Which solver for a laminar flow would be the best: icoFOAM, pisoFOAM, ...?

Currently we are using icoFOAM. But even with very small time steps the Courant number increases resulting into non-acceptable large values.

Thanks in advance,
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boundary conditions, hemodynamics, pulsatile

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