Particle velocity, pressure and flushing phenomenon of fine powders

• Autorzy: Kuchii, S. , Tomita, Y.
• Konferencja: Proceedings of the International Conference on Engineering Rheology ICER '99
• Języki publikacji: EN

Abstrakty

EN

When a load is applied to a free surface of cohesive fine powder in a vessel, the powder can spout from a small orifice, which we call the flushing. This phenomenon is explained by using a gas-solid two phase flow modeling in a view of effective stress and Darcy's law, and is verified experimentally and numerically for a case when the powder in a rectangular vessel spouts from a slit by a constant piston load. It is found that near the slit there appears a high-speed region of particle of which velocity is considerably larger than that of free following due to the gravity.

Słowa kluczowe

PL

materiałoznawstwo

EN

two-phase flow; Darcy’s law; fine powder; flushing region; velocity profile

• Czasopismo: Applied Mechanics and Engineering
• Rocznik: 1999
• Tom: Vol. 4, no. spec.
• Strony: 109-114
• Opis fizyczny: Bibliogr. 10 poz., rys., wykr.

Twórcy

autor

Kuchii, S.

autor

Tomita, Y.

• Kitakyushu National College of Technology, 5-20-1, Shii, Kokura-minami, Kitakyushu, JAPAN