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Reply To: Carotid Simulation – no flow through one branch of bifurcation

OpenLB – Open Source Lattice Boltzmann Code Forums on OpenLB General Topics Carotid Simulation – no flow through one branch of bifurcation Reply To: Carotid Simulation – no flow through one branch of bifurcation

#8510
TSchenkel
Participant

Cheers Adrian, that answered the second part of the question we hadn’t asked yet: would the off-axis work for pressure BC as well? Since the off-axis, off-lattice BCs seem to be for wall and velocity only. If I understand you correctly, the answer is “No”.

So our best approach would be to add an extension to the geometry and make it align with the lattice.

Since we only have the velocity waveform for the inlet, the swap to pressure inlet and velocity outlet (like in the bifurcation3d example) is not an option in this case.

With our geometry I think the geometry is such that an extension of the indicator cylinder would mean that the wall would not intersect with the extended cylinder (since the vessel opens up in places going inward from the outlet), as you suggested.

So we’ll have to add the extensions to the geometry to accommodate for these limitations in the LBM BC definition and lattice orientation.

Is there something like Bouzidi for pressure?

  • This reply was modified 3 weeks, 4 days ago by TSchenkel.