Numerical simulation of fluidization for application in oxyfuel combustion

Michal Beneš, ,Department of Mathematics, FNSPE CTU in Prague, Trojanova 13, 120 00 Praha 2, Czech Republic, Pavel Eichler, Jakub Klinkovský, Miroslav Kolář, Jakub Solovský, Pavel Strachota, Alexandr Žák
2018 Discrete and Continuous Dynamical Systems. Series S  
This paper is concerned with the simulation of multiphase flow hydrodynamics in an experimental oxyfuel fluidized bed combustor designed for biomass fuels. The aim is to perform cross-validation between several models and solvers that differ in the description of some phenomena in question. We focus on the influence of turbulence modeling, inter-phase drag force models, the presence of biomass in the mixture. Also the possibility to simplify the full 3D description to a quasi-1D model is
more » ... -1D model is tested. However, the results indicate that such simplification is not suitable for chaotic phenomena in considered scenarios. The models were developed using ANSYS Fluent and OpenFOAM CFD software packages as well as our in-house CFD code CFBSim. The quantities relevant for comparison (the densities of the dispersed solid phases and the phase velocities) are presented in the form of cross-section averaged vertical profiles.
doi:10.3934/dcdss.2020232 fatcat:tdi5rh2l4vayvfsyhjjopusiiu