Volume 53, Number 4, February 2001
|Page(s)||478 - 482|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 December 2003|
A new instability mode in fluidized beds
Department of Mechanical and Aerospace Engineering, University of California
San Diego, La Jolla, CA 92093-0411, USA
Corresponding author: firstname.lastname@example.org
Accepted: 28 November 2000
It is shown that the state of "isothermal"homogeneous fluidization can be linearly unstable to small-amplitude "non-isothermal" disturbances transverse to the direction of gravity. Conditions for instability of this new mode are examined and the marginal stability conditions are derived. The underlying physical mechanism of the instability is discussed and contrasted with the widely known particle-phase-inertia-driven longitudinal modes of planar instability voidage waves.
PACS: 47.55.Kf – Multiphase and particle-laden flows / 83.10.Lk – Multiphase flows / 47.20.-k – Hydrodynamic stability
© EDP Sciences, 2001
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