how to setting rotational b.c in wall?


I have a question.

now I trying rotational(angular velocity) b.c of wall . how to this?

I can’t search documentation for this problem. always they setting x , y , z velocity…

plz help.

thx for read

Hello oilsok,

There exists no data structure in Palabos that’s inherently axisymmetric. However, the off-lattice Boundary condition handles cylindrical geometries very well, and you get good results when you surround the simulation by, for example, a cylinder with free-slip walls.

In that case it’s your job to convert the velocity from cylindrical to Euclidean coordinates to impose the boundary condition.

If you’re interested in explicitly axisymmetric LB models, you could for example have a look at this publication: