CFD Simulation of Heat Transfer in Fluidized Bed Reactor

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Abstract:

This study aims to predict heat transfer from a heated bed in a gas fluidized bed using Syamlal-OBrien drag coefficient. Discrete particles model with the Navier-Stokes equation and Eulerian multiphase are used to approach heat transfer simulation. Coefficient of heat transfer which is related to Nusselt Number and volume fraction are calculated using Gunn model which was compiled from C++ program language. The effect of fluidization velocity variation on the heat transfer coefficient comes to the fore, indicating the heat transfer and solid volume fraction at the bed height are very dependent. Contour of solid volume fraction and temperature distribution are also presented.

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267-272

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January 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] S. Kallio, M. Gulden, A. Hermason., Experimental study and CFD Simulation of a 2D Circulating Fluidized Bed. Proceedings of the 20th International Conference on Fluidized Bed Combustion, p.818 (2009).

DOI: 10.1007/978-3-642-02682-9_123

Google Scholar

[2] Amit Kumar., CFD Modeling of Gas-Liquid-Solid Fluidized Bed. Department of Chemical Engineering National Institute of Technology Rourkela p.769, Orissa (2008).

Google Scholar

[3] L.M. Armstrong, S. Gu dan K.H. Luo. , Study of Wall-to-Bed Heat Transfer In a Bubling Fluidized Bed Using the Kinetic Theory of Granular flow. International Journal of Heat and Mass Transfer 53, pp.4949-4959, (2010).

DOI: 10.1016/j.ijheatmasstransfer.2010.05.047

Google Scholar

[4] S.M. Tasirin, S.K. Kamarudin dan A.M.A. Hweage, Mixing Behavior of Binary Polymer Particles in Bubbling Fluidized Bed. Journal of Physical Science, Vol. 19 (1), p.13–29 (2008).

Google Scholar

[5] M. Syamlal., D. Gidaspow, Hydrodynamics of fluidization: prediction of wall-to-bed heat transfer coefficients, AIChE J, Vol. 31, p.127–135(1985).

DOI: 10.1002/aic.690310115

Google Scholar

[6] D.J. Gunn, Transfer on heat or mass to particles in fixed and fluidized beds, International Journal of Heat and Mass Transfer, Vol. 21, pp.467-476 (1978).

DOI: 10.1016/0017-9310(78)90080-7

Google Scholar