Hydrodynamic model of the vibro-spouted bed—II. Derivation of pressure from vibratory action

✍ Scribed by Gy. Rátkai

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 493 KB
• Volume: 41
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(86)87108-1

✦ Synopsis

The particle velocity and the pressure distribution (derived from the vibratory action) in vibrospouted beds (Rdtkai, Gy., 1976, Powder Technol. 15, 187-192) were discussed in Part I of this series. In Part II the dependence of tht pressure which generates the particle flow, on the variables of the periodica3 motion is shown, taking into account the momentum transfer between the vibrated plate and the bed. The value of the pressure depends fundamentally on the velocity which characterizes the collisions occurring between the bed and the vibrated bottom. A detailed discussion showed that, in turn, the motion momentum transfer occurs only within a part of the period. The dependence of this effective part of the period on the frequency and the amplitude is discussed. A momentum transfer coefficient was introduced and it is shown that the momentum transfer into the bed is limited even under idealized circumstances, i.e. motion in vacuum.