2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/95055We use the discrete kinetic theory with the free-orientation parameter being fixed ($π/4$) to derive the macroscopic velocity field for many particles flowing through a microdomain. Our results resemble qualitatively other hydrodynamical solutions. The V-shaped velocity field changes as the dominant physical parameter (Knudsen number) varies. We also briefly discuss the possible mechanism due to the entropy production along the boundaries.1999-Works; two figuresGeneral Physicstext