Bubbly Flows pp 159-174

Part of the Heat and Mass Transfer book series (HMT)

Direct numerical simulation of mass transfer between rising gas bubbles and water

  • D. Bothe
  • M. Koebe
  • K. Wielage
  • J. Prüss
  • H.-J. Warnecke

Abstract

This paper presents numerical simulations of two-phase flow with high-density ratio, taking into account mass transport of a soluble component and its interfacial mass transfer. The mathematical model and the numerical method allow for different solubility of the species in the respective fluid phases, while volume changes due to mass transfer a reneglected. The discontinuous changes in species concentration sat the interface are modeled by means of Henry’s law. Simulations are carried out with a next ended version of the highly parallelized code FS3D, which employs an advanced Volume-Of-Fluid(VOF) method. For the examination of mass transfer, single bubbles are held in counter-flow to investigate the transient dissolution of a dilute species. In case of small bubbles with laminar wake a rotational symmetric concentration profile occurs, in agreement with theoretical considerations, while the local mass concentrations in the wake of larger bubbles show complex patterns of varying concentration as it also has been recently observed experimentally.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • D. Bothe
    • 1
  • M. Koebe
    • 1
  • K. Wielage
    • 1
    • 2
  • J. Prüss
    • 1
    • 3
  • H.-J. Warnecke
    • 1
  1. 1.Technische ChemieUniversität PaderbornPaderbornGermany
  2. 2.Paderborn Center for Parallel ComputingUniversität PaderbornPaderbornGermany
  3. 3.Institut für AnalysisMartin-Luther Universität Halle-WittenbergHalleGermany

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