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The influence of multiple tubes on the tube-to-bed heat transfer in a fluidised bed

Armstrong, LM, Gu, S and Luo, KH (2010) The influence of multiple tubes on the tube-to-bed heat transfer in a fluidised bed International Journal of Multiphase Flow, 36 (11-12,). pp. 916-929.

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There have been few studies modelling both flow and heat transfer in fluidised beds. The kinetic theory of granular flow (KTGF) has been used for flow prediction in the past without heat transfer modelling. In the present study, a two-fluid Eulerian–Eulerian formulation incorporating the KTGF was applied first to a tube-to-bed reactor with one immersed tube and compared with the results in the literature. The bed was then modified to introduce two and three heated tubes. The effects on the flow and temperature distribution, local heat transfer coefficients and averaged heat transfer coefficients over a 3.0 s time period were carried out. Results showed that increasing the number of tubes promotes heat transfer from tubes to the particles and flow. The heat transfer coefficients extracted from the single-tube to three-tube cases were analysed in detail, confirming the importance of linking flow/particle and heat transfer calculations.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Armstrong, LM
Luo, KH
Date : 19 August 2010
DOI : 10.1016/j.ijmultiphaseflow.2010.07.004
Uncontrolled Keywords : CFD, Heat transfer, Fluidised bed
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:51
Last Modified : 25 Jan 2020 00:26

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