CFD-DEM simulation of biomass combustion in a fluidized bed

Dnr:

SNIC 2017/4-41

Type:

SNAC Small

Principal Investigator:

Tian Qi

Affiliation:

Lunds universitet

Start Date:

2017-08-16

End Date:

2018-09-01

Primary Classification:

20304: Energiteknik

Webpage:

Allocation

Abstract

A comprehensive CFD-DEM numerical model will be developed to simulate the biomass combustion process in a fluidized bed reactor.The methodology is based on an Eulerian-Lagrangian concept, which uses an Eulerian method for gas phase and a discrete element method (DEM) for particle phase. Each particle is individually tracked and associated with multiple physical(size, density, composition and temperature) and thermo-chemical properties. Particle collisions, Hydrodynamics of dense gas-particle flow in fluidized beds, turbulence, heat and mass transfer, radiation, particle shrinkage, pyrolysis, and homogeneous and heterogeneous chemical reactions are all considered during the combustion process.