Mass Transfer around a Sphere Buried in a Packed Bed

João M.P.Q. Delgado; M. Vázquez da Silva

doi:10.4028/www.scientific.net/DDF.353.306

Paper Titles

Phase Transformation in Granular Alloys of Cu₂S-Ni₃S₂-Na₂S System
p.263

Phase Growth in Amorphous Si-Cu and Si-Co Systems: Combination of SNMS, XPS, XRD, and APT Techniques
p.269

Elastic Deformation Effects on the Thermo-Hydrodynamic Aspect of Porous Journal Bearings
p.275

Determination of Sorption Isotherm Based on the Measured Bottom Contaminant Flux
p.280

A Mechano-Chemical Coupling for Hydrogen Diffusion in Metals Based on a Thermodynamic Approach
p.286

Self-Diffusion on Pd(111) from the Point of View of the Band Model of Diffusion
p.292

The Convergence Rate of Iterative Procedures for Elliptic Problems in Heterogeneous Media
p.298

Mass Transfer around a Sphere Buried in a Packed Bed
p.306

Rising Damp: Optimization of the Wall Base Ventilation System
p.311

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Mass Transfer around a Sphere Buried in a Packed Bed

Abstract:

The transport phenomenon of mass transfers between a moving fluid and a reacting sphere buried in a packed bed, with “uniform velocity”, was analysed numerically, for solute transport by both advection and diffusion to obtain the concentration field and, from it, the dimensionless concentration boundary layer thickness, , for , and . The bed of inert particles is taken to have uniform voidage. For this purpose, numerical solutions of the partial differential equations describing mass concentration of the solute were undertaken to obtain the concentration boundary layer thickness as a function of the relevant parameters. Finally, mathematical expressions that relate the dependence with the Peclet number and inert particle diameter are proposed to describe the approximate size of the concentration boundary layer thickness.