“Could not addVelocityBoundary “

[lollipopcorn]

Hi,

In my multicomponent models with inflow and outflow, when start running it shows the error messages as follows:

…..
[prepareGeometry] Prepare Geometry … OK
[prepareLattice] Prepare Lattice …
[BoundaryConditionInstantiator2D] Could not addVelocityBoundary (2, 3)
[BoundaryConditionInstantiator2D] Could not addVelocityBoundary (2, 4)
[BoundaryConditionInstantiator2D] Could not addVelocityBoundary (2, 5)
[BoundaryConditionInstantiator2D] Could not addVelocityBoundary (2, 6)
…..
[BoundaryConditionInstantiator2D] Could not addVelocityBoundary (2, 99)
[BoundaryConditionInstantiator2D] Could not addVelocityBoundary (2, 100)
[prepareLattice] Prepare Lattice … OK
[main] starting simulation…
…..

It seems velocity boundary cannot be added along the line (2,3) to (2:100).
The boundary profile in geometry.vtm of my model looks quite similar to cylinder2D and bsteps2D.
And I used one geometry:
CuboidGeometry2D<T> cGeometry( 0, 0, 1, nx, ny, 1 );

Can someone tell me any potential reasons that may lead to this error?
Thanks!

John

[lollipopcorn]

I found the problem: velocity can only be added if only the adjacent lattices have the material 1. If you want to simulate a situation where there are 2 flows, you need to switch the flow material number such that the material number adjacent to the INLET is 1.

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