Effects of using two- versus three-dimensional computational modeling of fluidized beds: Part I, hydrodynamics

摘要: Abstract Simulations of fluidized beds are performed to study and determine the effect on use coordinate systems geometrical configurations model bed reactors. Computational fluid dynamics is employed for an Eulerian–Eulerian model, which represents each phase as interspersed continuum. The transport equation granular temperature solved a hyperbolic tangent function used provide smooth transition between plastic viscous regimes solid phase. aim present work show range validity employing simulations based 2D Cartesian system approximate both cylindrical rectangular beds. Three different fluidization regimes, bubbling, slugging turbulent investigated results 3D presented domains. demonstrate that can be successfully simulate predict bubbling regime. However, caution must exercised when using coordinates other regimes. A budget analysis explains all differences in detail Part II [N. Xie, F. Battaglia, S. Pannala, Effects Using Two-Versus Three-Dimensional Modeling Fluidized Beds: II, analysis, 182 (1) (2007) 14] complement hydrodynamic theory this paper.