2D CFD Simulation of Hydrodynamics of the Dense Zone of a 65t/h High-Low Bed CFB

Qing Wang; Jian Bo Xiao; Hong Peng Liu

doi:10.4028/www.scientific.net/AMR.614-615.596

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 614-6152D CFD Simulation of Hydrodynamics of the Dense...

2D CFD Simulation of Hydrodynamics of the Dense Zone of a 65t/h High-Low Bed CFB

Abstract:

Gas-solid flow behavior of the bottom zone of a 65t/h High-low bed CFB was simulated using the commercial computational fluid dynamics (CFD) software package Fluent. The Eulerian-Eulerian model (EEM) based on the kinetic theory of granular flow (KTGF) was adopted. This approach treated each phase as continuous separately. The link between the gas and solid phases was through drag model and turbulence model. While the turbulence was simulated by the standard k-ε and mixture multiphase model, the Gidaspow drag model was used to model the interphase interaction. Four phases were set to achieve size distribution in the EEM. Gas and solid flow profiles are obtained for solid velocity, solid volume fraction, pressure, and size distribution. The results show that EEM can predict preferably the internal circulation process of the dense zone high-low bed CFB.

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Periodical:

Advanced Materials Research (Volumes 614-615)

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596-599

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.614-615.596

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Online since:

December 2012

Authors:

Qing Wang, Jian Bo Xiao, Hong Peng Liu

Keywords:

Eulerian-Eulerian Model, High-Low Circulating Fluidized Bed, Internal Circulation Process

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