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Fluid dynamics of a pressurized fluidized bed: comparison between numerical solutions from two-fluid models and experimental results

✍ Scribed by H. Enwald; A.E. Almstedt

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
336 KB
Volume
54
Category
Article
ISSN
0009-2509

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✦ Synopsis

A validation of four different two-fluid model closures was carried out to investigate the effect of gas-phase turbulence, drift velocity and three dimensionality on the fluid dynamics of a bubbling fluidized bed. At atmospheric conditions, it is verified that gas-phase turbulence has a negligible effect for the bed material and operating conditions used in the investigation, whereas the validation shows some evidence that the gas-phase turbulence has a significant contribution for higher pressures. The drift velocity shows no noticeable effect on the results at any pressure. A comparison between two-and three-dimensional calculations at atmospheric pressure shows that the three-dimensional effects appear to be considerable.

πŸ“œ SIMILAR VOLUMES

Simulation of the fluid dynamics of a bu
Simulation of the fluid dynamics of a bubbling fluidized bed. Experimental validation of the two-fluid model and evaluation of a parallel multiblock solver
✍ H. Enwald; E. Peirano; A.E. Almstedt; B. Leckner πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 515 KB

A mesh refinement study and validation of two-fluid model closures were carried out for a bubbling fluidized bed application. The mesh refinement study indicates that a higher degree of mesh refinement is required for atmospheric than for pressurized fluidization. Statistical bubble parameters (bubb