Eulerian two-fluid simulations of gas-solid flow in a fluidized bed

Eulerian two- or multi-fluid models have been used widely to simulate gas-solid flow in fluidized beds. Fluidized beds are inherently unsteady in nature and the bubble dynamics significantly influences the performance of the fluidized bed reactor. Several research efforts are ongoing to improve predictive capabilities of Eulerian two- and multi-fluid models. In addition to time-averaged hydrodynamic parameters (e.g. solid volume fraction, velocity, etc.), the model should also be capable of predicting bubbling characteristics. In most of the previous studies, the Eulerian two- or multi-fluid models are validated using time-averaged velocity and solid volume fraction and limited works are available on validation of the models using instantaneous (time-resolved) measurements. We are working on validation of two- and multi-fluid models by local instantaneous measurements using time-resolved ECT for unary and binary gas-solid flow.

·     Brajesh K. Singh, Shantanu Roy, Vivek V. Buwa, "Characterization of Dynamics of Unary and Binary Gas-Solid Flow in a Cylindrical Fluidized Bed using Electrical Capacitance Tomography", presented at Gas-Liquid and Gas-Liquid-Solid Reactor Engineering (GLS 13), Brussels (Belgium), 2017.

·   Brajesh K. Singh, Shantanu Roy, Vivek V. Buwa, "Dynamics of Unary and Binary Gas-Solid Flows: ECT Measurements and CFD Simulations", presented at Gas-Liquid and Gas-Liquid-Solid Reactor Engineering (GLS 12), New York (USA), 2015.

·  Brajesh K. Singh, Shantanu Roy, Vivek V. Buwa, “Characterization of Gas-Solid Flows in a Fluidized Bed Using Electrical Capacitance Tomography” presented at presented at International Symposium on Chemical Reaction Engineering (ISCRE 25), Bangkok (Thailand), 2014.