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Measurements using LDV of continuous phase velocities of solid-liquid flow at elevated concentrations in a stirred vessel

Torbjörn Virdung (Institutionen för kemi- och bioteknik) ; Anders Rasmuson (Institutionen för kemi- och bioteknik)
Chemical engineering research & design (0263-8762). Vol. 85 (2007), A2, p. 193-200.
[Artikel, refereegranskad vetenskaplig]

Laser Doppler velocimetry was used to evaluate liquid axial velocities and turbulence levels in a stirred vessel equipped with a standard 45° pitch blade turbine. The measurements were conducted utilizing the method of matching refractive indices. Three different solid particle sizes were studied; 1.0 mm, 1.5 mm and 2.0 mm, and the maximum mean volume fractions for which measurements could be performed were 6%, 9% and 9%, respectively. The axial velocities were found to decrease with increasing solid content while the liquid r.m.s. velocities were higher in the suppensions than in a single phase flow, an effect that increases with increasing particle size.

Nyckelord: Laser doppler velocimetry; LDV; Multiphase flow; Solid-liquid; Solids suspensions; Stirred vessel



Denna post skapades 2008-01-10. Senast ändrad 2016-10-26.
CPL Pubid: 65496

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik (2005-2014)

Ämnesområden

Kemiteknik

Chalmers infrastruktur