Transversal patterns in three-dimensional packed bed reactors: Oscillatory kinetics

Olga Nekhamkina*, Moshe Sheintuch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Formation of transversal patterns in a 3D cylindrical reactor is studied with a catalytic reactor model in which an exothermic first-order reaction of Arrhenius kinetics occurs with a variable catalytic activity. Under these oscillatory kinetics, the system exhibits a planar front (1D) solution with the front position oscillating in the axial direction. Three types of patterns were simulated in the 3D system: rotating fronts, oscillating fronts with superimposed transversal (nonrotating) oscillations, and mixed rotating-oscillating fronts. These solutions coexist with the planar front solution and require special initial conditions. We map bifurcation diagrams showing domains of different modes using the reactor radius as a bifurcation parameter. The possible reduction of the 3D model to the 2D cylindrical shell model is discussed.

Original languageEnglish
Pages (from-to)2887-2897
Number of pages11
JournalAICHE Journal
Issue number11
StatePublished - Nov 2010
Externally publishedYes


  • Bifurcations
  • Fronts
  • Process
  • Reactor analysis
  • Simulation
  • Transversal patterns


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