Issues‎ > ‎Vol7No3‎ > ‎

sjes-10132


Computational Study of Heat Transfer Behavior in Fluid-Solid Fluidized Beds.

Sherko Ahmad Flamarza

Sulaimani Polytechnic University (SPU), Air Conditioning and Refrigeration Department

Received 13 January 2020 Accepted 16 April 2020 Available online 30 December 2020

ABSTRACT

Heat transfer in fluid-solid fluidized beds is investigated using a combined of computational fluid dynamics (CFD) and discrete element method (DEM) approach, incorporated with a thermal model. The approach has taken into account almost all the mechanisms in heat transfer in fluidized beds. A comparison and validation of hydrodynamic and thermal data of fluidized bed obtained using CFD-DEM thermal approach with experimental and numerical results data in the literature is carried out. The simulations results reveal a good thermal steady state during the simulation time for calculating the thermal behaviors of fluidized beds like; the mean particle temperature, bed porosity, heat transfer coefficient and mean particle Reynolds number. The simulations results are showed a good agreement and consistency with the experimental and numerical data in the literatures. Thus, the integration of combined CFD-DEM with the thermal model is a step toward for the prediction, development the heat transfer efficiency in fluid-solid system, and the decrease of energy consumption of the industrial applications.

KEYWORDS 

Fluidization, Multiphase flow, Combined CFD-DEM, Heat transfer

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