how to consider the tangential force in wall command

thanks for your attention,

Immobilized atoms can make an impermeable wall?

thanks for your attention,

Immobilized atoms can make an impermeable wall?

‚Äčno *real* wall or container is perfectly non-permeable. it is all a matter
of pressure/force, density, and temperature.
however, under typical simulation conditions it is essentially impossible.
i suggest you carefully study the "flow" and "obstacle" examples.

please note, that good and helpful responses require sufficiently detailed
and complete descriptions of the systems in questions. your inquiries,
however, are extremely vague and unspecific. thus only vague and unspecific
responses are possible.

axel.