Propagation velocity and rate of attenuation of surface waves on a homogeneously fluidized bed

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Kok, J.B.W. and Benschop, A.J. (1994) Propagation velocity and rate of attenuation of surface waves on a homogeneously fluidized bed. International Journal of Multiphase Flow, 20 (3). pp. 651-657. ISSN 0301-9322

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Abstract:Surface waves with a frequency of 0.5¿2.5 Hz were generated on a homogeneously fluidized bed. The propagation velocity and rate of attenuation of the induced pressure fluctuations were measured using signal averaging techniques. The measured wave velocity and attenuation rate correlated well with predictions based on a theory which considers the bed as an incompressible liquid with low viscosity. From the rate of attenuation an effective bed viscosity was calculated between 1.2 and 6.0 Pa · s. At high frequencies the wave generator produced high-amplitude density waves.
Item Type:Article
Copyright:© 1994 Elsevier Science
Faculty:
Engineering Technology (CTW)
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Link to this item:http://purl.utwente.nl/publications/32252
Official URL:http://dx.doi.org/10.1016/0301-9322(94)90035-3
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Metis ID: 144503