Eulerian-Eulerian Modeling and Validation of Heat Transfer in Bubbling and Spouted Fluidized Beds

In this work an Eulerian-Eulerian model for studying the heat transfer in bubbling and spouted fluidized beds is introduced. The numerical model is based on data obtained in a previous experimental work conducted at TU Eindhoven. In the experimental work, the cooling of different types of particles was studied by use of a lab-scale pseudo-2D fluidized-bed test rig. The fluidized bed was operated in both bubbling and spouted fluidization regimes and investigated by a combination of infrared thermometry and PIV/DIA data acquisition. The experiment considered particles of three different size classes, namely Geldart A/B, B, and D particles. In each test run, the particles were first preheated to a defined temperature before being introduced to the fluidized-bed test rig.
The present work discusses carefully the capability of the numerical model to reproduce the experimental results for different types of fluidization and different kinds of particles, which is an important step towards the reliable modeling of reactive fluidized-bed systems.