grid 1 8 8
cell_dimensions 1 1 1

flow incompressible
xy_boundary free_slip
yz_boundary free_slip
zx_boundary free_slip
viscosity 0.1
gravity 0

initial_particles everywhere random
density 64

initial_velocity zero

v 0 3 3 10
v 0 3 4 -10
w 0 3 3 -10
w 0 4 3 10

v 0 3 2 10
v 0 3 5 -10
w 0 2 3 -10
w 0 5 3 10

