Detailed computational and experimental fluid dynamics of fluid beds

To describe the hydrodynamic phenomena prevailing in large industrial scale previous termfluidized bedsnext term continuum models are required. The flow in these systems depends strongly on particle?particle interaction and gas?particle interaction. For this reason, proper closure relations for these two interactions are vital for reliable predictions on the basis of continuum models. Gas?particle interaction can be studied with the use of the lattice Boltzmann model (LBM), while the particle?particle interaction can suitably be studied with a discrete particle model. In this work it is shown that the discrete particle model, utilizing a LBM based drag model, has the capability to generate insight and eventually closure relations in processes such as mixing, segregation and homogeneous fluidization.

[1]  Reghan J. Hill,et al.  INERTIAL EFFECTS IN SUSPENSION AND POROUS-MEDIA FLOWS , 2001 .

[2]  Y. Tsuji,et al.  Discrete particle simulation of two-dimensional fluidized bed , 1993 .

[3]  B. Hoomans.  Granular dynamics of gas-solid two-phase flows , 2000 .

[4]  D. Gidaspow.  Multiphase Flow and Fluidization: Continuum and Kinetic Theory Descriptions , 1994 .

[5]  Hamid Arastoopour,et al.  Numerical simulation and experimental analysis of gas/solid flow systems: 1999 Fluor-Daniel Plenary lecture , 2001 .

[6]  M. Goldschmidt,et al.  Hydrodynamic Modelling of Fluidised Bed Spray Granulation , 2001 .

[7]  V. Swaaij,et al.  Hydrodynamic modeling of dense gas-fluidised beds using the kinetic theory of granular flow: effect of coefficient of restitution on bed dynamics , 2000 .

[8]  P. K. Agarwal,et al.  Digital image analysis techniques for the study of bubbling fluidized beds , 1997 .

[9]  Jam Hans Kuipers,et al.  Digital image analysis measurements of bed expansion and segregation dynamics in dense gas-fluidized beds , 2003 .

[10]  Jam Hans Kuipers,et al.  Hydrodynamic modelling of dense gas-fluidised beds: Comparison of the kinetic theory of granular flow with 3D hard-sphere discrete particle simulations , 2002 .

[11]  Jam Hans Kuipers,et al.  A numerical study of fluidization behavior of Geldart A particles using a discrete particle model , 2004 .

[12]  Jerry Westerweel,et al.  Two-Phase PIV in Bubbly Flows: Status and Trends , 2002 .

[13]  J. Kuipers,et al.  Lattice-Boltzmann simulations of low-Reynolds-number flow past mono- and bidisperse arrays of spheres: results for the permeability and drag force , 2005, Journal of Fluid Mechanics.

[14]  J. Kuipers,et al.  Discrete particle simulation of bubble and slug formation in a two-dimensional gas-fluidised bed: A hard-sphere approach. , 1996 .

[15]  P. Trambouze,et al.  Computational Fluid Dynamics Applied to Chemical Reaction Engineering , 1993 .

[16]  C. Wen.  Mechanics of Fluidization , 1966 .

[17]  B.P.B. Hoomans,et al.  Granular dynamics simulation of segregation phenomena in bubbling gas-fluidised beds , 2000 .

[18]  Jam Hans Kuipers,et al.  Mixing and segregation in a bidisperse gas-solid fluidized bed: a numerical and experimental study , 2004 .

[19]  Validation of the granular temperature prediction of the kinetic theory of granular flow by particle image velocimetry and discrete particle model , 2004 .

[20]  S. Ergun.  Fluid flow through packed columns , 1952 .

[21]  J. Westerweel.  Fundamentals of digital particle image velocimetry , 1997 .

[22]  Faïçal Larachi,et al.  Non-invasive monitoring of multiphase flows , 1997 .

[23]  Dimitri Gidaspow,et al.  Hydrodynamics of fluidization using kinetic theory: an emerging paradigm: 2002 Flour-Daniel lecture , 2004 .

[24]  Bo G Leckner,et al.  Fundamentals of turbulent gas-solid flows applied to circulating fluidized bed combustion , 1998 .