Abstract
The simulation framework was developed from the licensed computational fluid dynamics
(CFD15) software to simulate the hydrodynamics of gas-solid flow in CFB/FCC riser
reactors. The predictions from the commercial CFD code (CFX and fluent) were based on
the Eulerian-Eulerian multiphase model using k-ε model. A validation using published
experimental data from the open literature was conducted. The flow model is based on an
Eulerian-Eulerian description of the phases where the kinetic theory for granular flow
(KTGF) forms the basis for the turbulence modelling in the solid phases. In addition, for
constant diametre and particle density, better understanding of the hydrodynamics of the gassolid flow, under
various loading of gas and solid flux were achieved. Within the limit of the computational error, it was found that the choice of the ANSYS Fluent solver provide the best understanding on the gas-solid hydrodynamics in CFB/FCC riser systems. In addition, the availability of transport KTGF in Fluent solver was a focus reason why the concluded choices of establishing a better understanding of the gas-solid hydrodynamics in riser reactors were deduced.