[tartopomm]

I meant there was still a no-slip boundary condition on the top and on the bottom of the domain. I was using openlb 1.1.

i downloaded openlb 1.2 yesterday and indeed it worked perfectly well with your comments. thank you!

But how come it went wrong with openlb1.1 ?

[tartopomm]

So I added that line just before setting the slip boundary:

sLattice.defineDynamics( superGeometry, 2, instances::getNoDynamics<T, DESCRIPTOR>() )

but again, it didn’t change anything, did I miss something?

Thank you for your time!

[tartopomm]

Thank you for your answer, I managed to get what I wanted!
Then, I would have another question: I would like to have a slip condition on the top and on the bottom of my domain, so I added this line where the boundary conditions are defined (velocity and pressure):

sBoundaryCondition.addSlipBoundary( superGeometry, 2)

But is it enough or should I add something else? because when I ran the simulation, it didn’t change much.

thank you!

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