Hydrodynamics of airlift reactor with internal circulation loop: Experiment vs. CFD simulation

P. Lestinsky*, Petri Väyrynen, M. Vecer, K. Wichterle

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

27 Citations (Scopus)
128 Downloads (Pure)


Effect of geometrical parameters on two phase hydrodynamics of airlift reactor is the main topic of present paper. Laboratory scale apparatus with internal circulation loop consists of concentric draft tube, in which a gas bubbles rising. Setup of draft tube inside of reactor is important geometry parameter and has big influence on two phase hydrodynamics. In experiment was studied influence of changes diameter of draft tube to hydrodynamics in airlift reactor. Results of experiments (liquid velocity and gas hold-up) were compared with the simple CFD simulations performed in COMSOL Multiphysics 3.5a. For each point of gas volumetric flow in simulation, were determined conditions of bubble diameter and bubble drag coefficient. Although bubble break-up and coalescence were neglected, the results of numerical simulation are in pretty good agreement with experimental data.

Original languageEnglish
Title of host publication20th International Congress of Chemical and Process Engineering CHISA 2012 25 – 29 August 2012, Prague, Czech Republic
Number of pages16
Publication statusPublished - 2012
MoE publication typeA4 Article in a conference publication
EventInternational Congress of Chemical and Process Engineering - Prague, Czech Republic
Duration: 25 Aug 201229 Aug 2012
Conference number: 20

Publication series

NameProcedia Engineering
ISSN (Electronic)1877-7058


ConferenceInternational Congress of Chemical and Process Engineering
Abbreviated titleCHISA
Country/TerritoryCzech Republic


  • Airlift reactor
  • Bubbles
  • CFD simulation
  • Draft tube


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