抄録
The behaviors of particles in the flow is repeating several collision and friction each other. On that occasion, depending the materiality of particles, a contraction is actuated in elastically or non-elastically. A numerical simulation with Voigt model is done and added forces are divided into two directions, i.e. normal direction and shear direction. Voigt model has the friction slider to the shear direction. As the results, we corroborate the adaptability powder particles and motion control.
