Dynamic response of a vibrated fluidized bed of fine and cohesive powders

• Published in: Powder technology Vol. 237; pp. 276 - 285
• Main Authors: Barletta, Diego, Russo, Paola, Poletto, Massimo
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.03.2013; Elsevier
• Subjects: Amplitude ratio; Amplitudes; Applied sciences; Bode diagrams; Chemical engineering; Dynamic response; Elastic waves; equations; Exact sciences and technology; Fluidization; fluidized beds; Friction; Gas fluidized beds; Mathematical models; Miscellaneous; Natural vibration frequency; Oscillations; Phase lag; powders; Solid-solid systems; time series analysis; Vibration; Viscous damping; Walls; Dynamic response; Amplitude ratio; Gas fluidized beds; Vibration; Bode diagrams; Natural vibration frequency; Time series; Fluidization; Modeling; Powder; Friction; High speed; Particle image velocimetry; Viscous dissipation; Fluidized bed

The dynamics of a fully fluidized bed of group A and group C powders subject to vertical vibration was studied in an 85mm ID transparent perspex column. Acceleration level was set to a/g=1 and 2 respectively for the two powders. Frequency was varied in the range between 5 and 60Hz. Different bed mas...