I want to oscillate the granular particles in 2d horizontal box just in
x-dimension, not oscillating the walls. If I use fix wall/gran with option
wiggls, one for oscillating end walls(yplane) and the other for
oscillating zplane, It works?
But I think oscillating zplane(second fix wall/gran command) is not
necessary, because I want an oscillation just in x-dimension not
z-dimension. Is oscillating the xplane equivalent with oscillating the