TIBERIU DINU DANCIU, EMIL DANCIU SEPARATION OF HETEROGENEOUS SOLID – FLUID MIXTURES IX. FILTRATION THEORY WITH NEW FLOWING MODELS THROUGH PACKED BEDS
Starting from geometrical model based on particles of ideal shape deposed as incompressible precipitate and on extreme degrees of compaction for spherical layers (hexagonal and cubic lattice, respectively), new relations for filtration specific resistances calculus were proposed. The weight between the two extreme layouts, expressed as XC, gives for the modified traditional model very closed values to the geometrical model. For the engineering approach a model exclusively based on void fraction å is more convenient, so corrections were suggested. Presented formulas are limited to the constant pressure filtration with incompressible precipitate, consisting from particles of irregular size, but with a calculable shape factor f.
Keywords: filtration theory, filtration modeling, real geometry of solid particles and precipitate pores, specific resistances