Validation of a 2.5D CFD model for cylindrical gas–solids fluidized beds

• The 2.5D model was validated against experimental data.
• Two experimental systems and three types of particles were considered.
• Detailed comparisons are reported for the flow hydrodynamics.
• The 2.5D model yields considerable improvement over the 2D model.

The 2.5D model recently proposed by Li et al. (Li, T., Benyahia, S., Dietiker, J., Musser, J., and Sun, X., 2015. A 2.5D computational method to simulate cylindrical fluidized beds. Chemical Engineering Science. 123, 236–246) was validated for two cylindrical gas–solids bubbling fluidized bed systems. Different types of particles tested under various flow conditions were simulated using the traditional 2D model and the 2.5D model. Detailed comparison against the experimental measurements on solid concentration and velocity were conducted. Comparing to the traditional Cartesian 2D flow simulation, the 2.5D model yielded better agreement with the experimental data especially for the solid velocity prediction in the column wall region.

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