INVESTIGADORES
RAMAJO Damian Enrique
congresos y reuniones científicas
Título:
HIGH DENSITY CIRCULATING FLUIDIZED BED RISER:INFLUENCE OF DRAG MODEL, KINETIC THEORY AND WALL SLIP CONDITIONS
Autor/es:
RAMAJO DAMIAN ENRIQUE; MARQUEZ DAMIAN SANTIAGO; RAVICULÉ MARCELA; NIGRO NORBERTO MARCELO
Lugar:
Buenos Aires
Reunión:
Congreso; MECOM 2010; 2010
Institución organizadora:
AMCA
Resumen:
High density circulating fluidized bed (HDCFB) modeling has been performed by
Computational Fluid Dynamics (CFD). The influence of three crucial modeling parameters was
studied; the drag model (the Wen Yu, Gidaspow and EMMS models were assessed), the use of kinetic
theory of granular flow (KTGF) and the wall slip condition (influence of slip, no slip and partially slip
boundary conditions were investigated). Comparison of numerical results with experimental ones
reported in literature for a laboratory planar riser allowed pointing out the impact of each one of the
three modeling parameters on flow behavior, concluding that the drag model has a crucial role on the
prediction of solid output flow and solid vertical profile. On the other hand, KTGF and the no-slip
wall condition showed to be crucial to guaranty the numerical stability