Two-fluid modelling of cooling-tube erosion in a fluidized bed
Artikel i vetenskaplig tidskrift, 2000

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.

Wear

Curvilinear co-ordinates

Tubes

Fluidized bed

Erosion

Författare

Mattias Gustavsson

Alf-Erik Almstedt

Chalmers, Tillämpad mekanik

Chalmers, Institutionen för termo- och fluiddynamik

Chemical Engineering Sciences

0009-2509 (ISSN)

Vol. 55 4 867-879

Ämneskategorier

Kemiteknik

Strömningsmekanik och akustik

DOI

10.1016/S0009-2509(99)00357-7