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Two-fluid modelling of cooling-tube erosion in a fluidized bed

Mattias Gustavsson ; Alf-Erik Almstedt (Institutionen för tillämpad mekanik ; Institutionen för termo- och fluiddynamik)
Chemical Engineering Science (0009-2509). Vol. 55 (2000), 4, p. 867-879.
[Artikel, refereegranskad vetenskaplig]

The fluid dynamics of a bubbling fluidized bed is simulated in general curvilinear co-ordinates using an Eulerian two-fluid model. Computations are performed at different pressure levels for a bed with a cross-sectional width of 0.3 m in which two heat exchanger tubes were inserted. A monolayer kinetic energy dissipation model is implemented to simulate the erosion of cooling tube surfaces. The local visible bubble flow and particle motion close to the tubes are correlated with the modelled instantaneous erosion rate. Experiments were conducted in order to validate the erosion simulations, and fair qualitative agreement between experimental and numerical results was obtained.

Nyckelord: Fluidized bed, Erosion, Wear, Curvilinear co-ordinates, Tubes



Denna post skapades 2006-08-28. Senast ändrad 2013-05-29.
CPL Pubid: 16278

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik (1900-2017)
Institutionen för termo- och fluiddynamik (1989-2004)

Ämnesområden

Strömningsmekanik
Kemiteknik

Chalmers infrastruktur