CFD-modelling of the fluid dynamics in spouted beds

Start Page
265
End Page
275
Citation
Micro-Macro-interaction: In Structured media and Particle Systems: 265-275 (2008-12)
Publisher DOI
10.1007/978-3-540-85715-0_21
Scopus ID
2-s2.0-84885430580
Publisher
Springer
ISBN
978-3-540-85715-0
978-3-540-85714-3
ISBN of container
978-3-540-85715-0
978-3-540-85714-3
Recently the importance of the spouted bed technology has significantly increased in the context of drying processes as well as granulation, agglomeration or coating processes. However, the understanding of the complex interactions within and between the single phases is still low and needs further improvement. Several research groups apply both continuum as well as discrete element simulations to understand the hydrodynamics of the spouting process. Within this work, the hydrodynamical behaviour of a novel spouted bed apparatus is modelled by applying the Euler/Euler continuum approach in two dimensions in the commercial CFD software-package FLUENT 6.2. The focus of this study is the influence of different gas-particle drag models on the flow structure in the spouted bed apparatus. Simulated spatial distributions of the granular solid phase in the apparatus are compared with images taken during experiments. Characteristic gas phase fluctuations over the entire bed are simultaneously measured by a high frequency pressure detector and will be compared with calculated fluctuations. Also a Fourier analysis on the measured and simulated pressure frequency spectra will be demonstrated.
DDC Class
600: Technology